20131475120

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1\times {\mathrm{13967}}^1$

素因数の和:14442

約数の個数: 80

約数和(自身を含む): 48011927040

約数和(自身を除く): 27880451920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 419, 430, 688, 838, 860, 1676, 1720, 2095, 3352, 3440, 4190, 6704, 8380, 13967, 16760, 18017, 27934, 33520, 36034, 55868, 69835, 72068, 90085, 111736, 139670, 144136, 180170, 223472, 279340, 288272, 360340, 558680, 600581, 720680, 1117360, 1201162, 1441360, 2402324, 3002905, 4804648, 5852173, 6005810, 9609296, 11704346, 12011620, 23408692, 24023240, 29260865, 46817384, 48046480, 58521730, 93634768, 117043460, 234086920, 251643439, 468173840, 503286878, 1006573756, 1258217195, 2013147512, 2516434390, 4026295024, 5032868780, 10065737560, 20131475120]

約数ペア:

[(1, 20131475120), (2, 10065737560), (4, 5032868780), (5, 4026295024), (8, 2516434390), (10, 2013147512), (16, 1258217195), (20, 1006573756), (40, 503286878), (43, 468173840), (80, 251643439), (86, 234086920), (172, 117043460), (215, 93634768), (344, 58521730), (419, 48046480), (430, 46817384), (688, 29260865), (838, 24023240), (860, 23408692), (1676, 12011620), (1720, 11704346), (2095, 9609296), (3352, 6005810), (3440, 5852173), (4190, 4804648), (6704, 3002905), (8380, 2402324), (13967, 1441360), (16760, 1201162), (18017, 1117360), (27934, 720680), (33520, 600581), (36034, 558680), (55868, 360340), (69835, 288272), (72068, 279340), (90085, 223472), (111736, 180170), (139670, 144136)]