71718920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:128

約数の個数: 256

約数和(自身を含む): 224985600

約数和(自身を除く): 153266680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 17, 19, 20, 26, 28, 34, 35, 38, 40, 52, 56, 61, 65, 68, 70, 76, 85, 91, 95, 104, 119, 122, 130, 133, 136, 140, 152, 170, 182, 190, 221, 238, 244, 247, 260, 266, 280, 305, 323, 340, 364, 380, 427, 442, 455, 476, 488, 494, 520, 532, 595, 610, 646, 665, 680, 728, 760, 793, 854, 884, 910, 952, 988, 1037, 1064, 1105, 1159, 1190, 1220, 1235, 1292, 1330, 1547, 1586, 1615, 1708, 1729, 1768, 1820, 1976, 2074, 2135, 2210, 2261, 2318, 2380, 2440, 2470, 2584, 2660, 3094, 3172, 3230, 3416, 3458, 3640, 3965, 4148, 4199, 4270, 4420, 4522, 4636, 4760, 4940, 5185, 5320, 5551, 5795, 6188, 6344, 6460, 6916, 7259, 7735, 7930, 8113, 8296, 8398, 8540, 8645, 8840, 9044, 9272, 9880, 10370, 11102, 11305, 11590, 12376, 12920, 13481, 13832, 14518, 15067, 15470, 15860, 16226, 16796, 17080, 17290, 18088, 19703, 20740, 20995, 22204, 22610, 23180, 26962, 27755, 29036, 29393, 30134, 30940, 31720, 32452, 33592, 34580, 36295, 39406, 40565, 41480, 41990, 44408, 45220, 46360, 53924, 55510, 58072, 58786, 60268, 61880, 64904, 67405, 69160, 72590, 75335, 78812, 81130, 83980, 90440, 94367, 98515, 105469, 107848, 111020, 117572, 120536, 134810, 137921, 145180, 146965, 150670, 157624, 162260, 167960, 188734, 197030, 210938, 222040, 235144, 256139, 269620, 275842, 290360, 293930, 301340, 324520, 377468, 394060, 421876, 471835, 512278, 527345, 539240, 551684, 587860, 602680, 689605, 754936, 788120, 843752, 943670, 1024556, 1054690, 1103368, 1175720, 1280695, 1379210, 1792973, 1887340, 2049112, 2109380, 2561390, 2758420, 3585946, 3774680, 4218760, 5122780, 5516840, 7171892, 8964865, 10245560, 14343784, 17929730, 35859460, 71718920]

約数ペア:

[(1, 71718920), (2, 35859460), (4, 17929730), (5, 14343784), (7, 10245560), (8, 8964865), (10, 7171892), (13, 5516840), (14, 5122780), (17, 4218760), (19, 3774680), (20, 3585946), (26, 2758420), (28, 2561390), (34, 2109380), (35, 2049112), (38, 1887340), (40, 1792973), (52, 1379210), (56, 1280695), (61, 1175720), (65, 1103368), (68, 1054690), (70, 1024556), (76, 943670), (85, 843752), (91, 788120), (95, 754936), (104, 689605), (119, 602680), (122, 587860), (130, 551684), (133, 539240), (136, 527345), (140, 512278), (152, 471835), (170, 421876), (182, 394060), (190, 377468), (221, 324520), (238, 301340), (244, 293930), (247, 290360), (260, 275842), (266, 269620), (280, 256139), (305, 235144), (323, 222040), (340, 210938), (364, 197030), (380, 188734), (427, 167960), (442, 162260), (455, 157624), (476, 150670), (488, 146965), (494, 145180), (520, 137921), (532, 134810), (595, 120536), (610, 117572), (646, 111020), (665, 107848), (680, 105469), (728, 98515), (760, 94367), (793, 90440), (854, 83980), (884, 81130), (910, 78812), (952, 75335), (988, 72590), (1037, 69160), (1064, 67405), (1105, 64904), (1159, 61880), (1190, 60268), (1220, 58786), (1235, 58072), (1292, 55510), (1330, 53924), (1547, 46360), (1586, 45220), (1615, 44408), (1708, 41990), (1729, 41480), (1768, 40565), (1820, 39406), (1976, 36295), (2074, 34580), (2135, 33592), (2210, 32452), (2261, 31720), (2318, 30940), (2380, 30134), (2440, 29393), (2470, 29036), (2584, 27755), (2660, 26962), (3094, 23180), (3172, 22610), (3230, 22204), (3416, 20995), (3458, 20740), (3640, 19703), (3965, 18088), (4148, 17290), (4199, 17080), (4270, 16796), (4420, 16226), (4522, 15860), (4636, 15470), (4760, 15067), (4940, 14518), (5185, 13832), (5320, 13481), (5551, 12920), (5795, 12376), (6188, 11590), (6344, 11305), (6460, 11102), (6916, 10370), (7259, 9880), (7735, 9272), (7930, 9044), (8113, 8840), (8296, 8645), (8398, 8540)]