21750820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:102

約数の個数: 192

約数和(自身を含む): 64350720

約数和(自身を除く): 42599900

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 19, 20, 26, 28, 34, 35, 37, 38, 52, 65, 68, 70, 74, 76, 85, 91, 95, 119, 130, 133, 140, 148, 170, 182, 185, 190, 221, 238, 247, 259, 260, 266, 323, 340, 364, 370, 380, 442, 455, 476, 481, 494, 518, 532, 595, 629, 646, 665, 703, 740, 884, 910, 962, 988, 1036, 1105, 1190, 1235, 1258, 1292, 1295, 1330, 1406, 1547, 1615, 1729, 1820, 1924, 2210, 2261, 2380, 2405, 2470, 2516, 2590, 2660, 2812, 3094, 3145, 3230, 3367, 3458, 3515, 4199, 4403, 4420, 4522, 4810, 4921, 4940, 5180, 6188, 6290, 6460, 6734, 6916, 7030, 7735, 8177, 8398, 8645, 8806, 9044, 9139, 9620, 9842, 11305, 11951, 12580, 13468, 14060, 15470, 16354, 16796, 16835, 17290, 17612, 18278, 19684, 20995, 22015, 22610, 23902, 24605, 29393, 30940, 32708, 33670, 34580, 36556, 40885, 41990, 44030, 45220, 45695, 47804, 49210, 57239, 58786, 59755, 63973, 67340, 81770, 83657, 83980, 88060, 91390, 98420, 114478, 117572, 119510, 127946, 146965, 155363, 163540, 167314, 182780, 228956, 239020, 255892, 286195, 293930, 310726, 319865, 334628, 418285, 572390, 587860, 621452, 639730, 776815, 836570, 1087541, 1144780, 1279460, 1553630, 1673140, 2175082, 3107260, 4350164, 5437705, 10875410, 21750820]

約数ペア:

[(1, 21750820), (2, 10875410), (4, 5437705), (5, 4350164), (7, 3107260), (10, 2175082), (13, 1673140), (14, 1553630), (17, 1279460), (19, 1144780), (20, 1087541), (26, 836570), (28, 776815), (34, 639730), (35, 621452), (37, 587860), (38, 572390), (52, 418285), (65, 334628), (68, 319865), (70, 310726), (74, 293930), (76, 286195), (85, 255892), (91, 239020), (95, 228956), (119, 182780), (130, 167314), (133, 163540), (140, 155363), (148, 146965), (170, 127946), (182, 119510), (185, 117572), (190, 114478), (221, 98420), (238, 91390), (247, 88060), (259, 83980), (260, 83657), (266, 81770), (323, 67340), (340, 63973), (364, 59755), (370, 58786), (380, 57239), (442, 49210), (455, 47804), (476, 45695), (481, 45220), (494, 44030), (518, 41990), (532, 40885), (595, 36556), (629, 34580), (646, 33670), (665, 32708), (703, 30940), (740, 29393), (884, 24605), (910, 23902), (962, 22610), (988, 22015), (1036, 20995), (1105, 19684), (1190, 18278), (1235, 17612), (1258, 17290), (1292, 16835), (1295, 16796), (1330, 16354), (1406, 15470), (1547, 14060), (1615, 13468), (1729, 12580), (1820, 11951), (1924, 11305), (2210, 9842), (2261, 9620), (2380, 9139), (2405, 9044), (2470, 8806), (2516, 8645), (2590, 8398), (2660, 8177), (2812, 7735), (3094, 7030), (3145, 6916), (3230, 6734), (3367, 6460), (3458, 6290), (3515, 6188), (4199, 5180), (4403, 4940), (4420, 4921), (4522, 4810)]