18697860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{953}}^1$

素因数の和:1077

約数の個数: 72

約数和(自身を含む): 57297240

約数和(自身を除く): 38599380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 953, 981, 1090, 1308, 1635, 1906, 1962, 2180, 2859, 3270, 3812, 3924, 4765, 4905, 5718, 6540, 8577, 9530, 9810, 11436, 14295, 17154, 19060, 19620, 28590, 34308, 42885, 57180, 85770, 103877, 171540, 207754, 311631, 415508, 519385, 623262, 934893, 1038770, 1246524, 1558155, 1869786, 2077540, 3116310, 3739572, 4674465, 6232620, 9348930, 18697860]

約数ペア:

[(1, 18697860), (2, 9348930), (3, 6232620), (4, 4674465), (5, 3739572), (6, 3116310), (9, 2077540), (10, 1869786), (12, 1558155), (15, 1246524), (18, 1038770), (20, 934893), (30, 623262), (36, 519385), (45, 415508), (60, 311631), (90, 207754), (109, 171540), (180, 103877), (218, 85770), (327, 57180), (436, 42885), (545, 34308), (654, 28590), (953, 19620), (981, 19060), (1090, 17154), (1308, 14295), (1635, 11436), (1906, 9810), (1962, 9530), (2180, 8577), (2859, 6540), (3270, 5718), (3812, 4905), (3924, 4765)]