18955384

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 23899016

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 61, 62, 122, 124, 179, 217, 244, 248, 358, 427, 434, 488, 716, 854, 868, 1253, 1432, 1708, 1736, 1891, 2506, 3416, 3782, 5012, 5549, 7564, 10024, 10919, 11098, 13237, 15128, 21838, 22196, 26474, 38843, 43676, 44392, 52948, 76433, 77686, 87352, 105896, 152866, 155372, 305732, 310744, 338489, 611464, 676978, 1353956, 2369423, 2707912, 4738846, 9477692, 18955384]

約数ペア:

[(1, 18955384), (2, 9477692), (4, 4738846), (7, 2707912), (8, 2369423), (14, 1353956), (28, 676978), (31, 611464), (56, 338489), (61, 310744), (62, 305732), (122, 155372), (124, 152866), (179, 105896), (217, 87352), (244, 77686), (248, 76433), (358, 52948), (427, 44392), (434, 43676), (488, 38843), (716, 26474), (854, 22196), (868, 21838), (1253, 15128), (1432, 13237), (1708, 11098), (1736, 10919), (1891, 10024), (2506, 7564), (3416, 5549), (3782, 5012)]