256804380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:689

約数の個数: 288

約数和(自身を含む): 993807360

約数和(自身を除く): 737002980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 19, 20, 21, 28, 30, 34, 35, 36, 38, 42, 45, 51, 57, 60, 63, 68, 70, 76, 84, 85, 90, 95, 102, 105, 114, 119, 126, 133, 140, 153, 170, 171, 180, 190, 204, 210, 228, 238, 252, 255, 266, 285, 306, 315, 323, 340, 342, 357, 380, 399, 420, 476, 510, 532, 570, 595, 612, 630, 631, 646, 665, 684, 714, 765, 798, 855, 969, 1020, 1071, 1140, 1190, 1197, 1260, 1262, 1292, 1330, 1428, 1530, 1596, 1615, 1710, 1785, 1893, 1938, 1995, 2142, 2261, 2380, 2394, 2524, 2660, 2907, 3060, 3155, 3230, 3420, 3570, 3786, 3876, 3990, 4284, 4417, 4522, 4788, 4845, 5355, 5679, 5814, 5985, 6310, 6460, 6783, 7140, 7572, 7980, 8834, 9044, 9465, 9690, 10710, 10727, 11305, 11358, 11628, 11970, 11989, 12620, 13251, 13566, 14535, 17668, 18930, 19380, 20349, 21420, 21454, 22085, 22610, 22716, 23940, 23978, 26502, 27132, 28395, 29070, 32181, 33915, 35967, 37860, 39753, 40698, 42908, 44170, 45220, 47956, 53004, 53635, 56790, 58140, 59945, 64362, 66255, 67830, 71934, 75089, 79506, 81396, 83923, 88340, 96543, 101745, 107270, 107901, 113580, 119890, 128724, 132510, 135660, 143868, 150178, 159012, 160905, 167846, 179835, 193086, 198765, 203490, 203813, 214540, 215802, 225267, 239780, 251769, 265020, 300356, 321810, 335692, 359670, 375445, 386172, 397530, 406980, 407626, 419615, 431604, 450534, 482715, 503538, 539505, 611439, 643620, 675801, 719340, 750890, 755307, 795060, 815252, 839230, 901068, 965430, 1007076, 1019065, 1079010, 1126335, 1222878, 1258845, 1351602, 1426691, 1501780, 1510614, 1678460, 1834317, 1930860, 2038130, 2158020, 2252670, 2445756, 2517690, 2703204, 2853382, 3021228, 3057195, 3379005, 3668634, 3776535, 4076260, 4280073, 4505340, 5035380, 5706764, 6114390, 6758010, 7133455, 7337268, 7553070, 8560146, 9171585, 12228780, 12840219, 13516020, 14266910, 15106140, 17120292, 18343170, 21400365, 25680438, 28533820, 36686340, 42800730, 51360876, 64201095, 85601460, 128402190, 256804380]

約数ペア:

[(1, 256804380), (2, 128402190), (3, 85601460), (4, 64201095), (5, 51360876), (6, 42800730), (7, 36686340), (9, 28533820), (10, 25680438), (12, 21400365), (14, 18343170), (15, 17120292), (17, 15106140), (18, 14266910), (19, 13516020), (20, 12840219), (21, 12228780), (28, 9171585), (30, 8560146), (34, 7553070), (35, 7337268), (36, 7133455), (38, 6758010), (42, 6114390), (45, 5706764), (51, 5035380), (57, 4505340), (60, 4280073), (63, 4076260), (68, 3776535), (70, 3668634), (76, 3379005), (84, 3057195), (85, 3021228), (90, 2853382), (95, 2703204), (102, 2517690), (105, 2445756), (114, 2252670), (119, 2158020), (126, 2038130), (133, 1930860), (140, 1834317), (153, 1678460), (170, 1510614), (171, 1501780), (180, 1426691), (190, 1351602), (204, 1258845), (210, 1222878), (228, 1126335), (238, 1079010), (252, 1019065), (255, 1007076), (266, 965430), (285, 901068), (306, 839230), (315, 815252), (323, 795060), (340, 755307), (342, 750890), (357, 719340), (380, 675801), (399, 643620), (420, 611439), (476, 539505), (510, 503538), (532, 482715), (570, 450534), (595, 431604), (612, 419615), (630, 407626), (631, 406980), (646, 397530), (665, 386172), (684, 375445), (714, 359670), (765, 335692), (798, 321810), (855, 300356), (969, 265020), (1020, 251769), (1071, 239780), (1140, 225267), (1190, 215802), (1197, 214540), (1260, 203813), (1262, 203490), (1292, 198765), (1330, 193086), (1428, 179835), (1530, 167846), (1596, 160905), (1615, 159012), (1710, 150178), (1785, 143868), (1893, 135660), (1938, 132510), (1995, 128724), (2142, 119890), (2261, 113580), (2380, 107901), (2394, 107270), (2524, 101745), (2660, 96543), (2907, 88340), (3060, 83923), (3155, 81396), (3230, 79506), (3420, 75089), (3570, 71934), (3786, 67830), (3876, 66255), (3990, 64362), (4284, 59945), (4417, 58140), (4522, 56790), (4788, 53635), (4845, 53004), (5355, 47956), (5679, 45220), (5814, 44170), (5985, 42908), (6310, 40698), (6460, 39753), (6783, 37860), (7140, 35967), (7572, 33915), (7980, 32181), (8834, 29070), (9044, 28395), (9465, 27132), (9690, 26502), (10710, 23978), (10727, 23940), (11305, 22716), (11358, 22610), (11628, 22085), (11970, 21454), (11989, 21420), (12620, 20349), (13251, 19380), (13566, 18930), (14535, 17668)]