18089740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 39674880

約数和(自身を除く): 21585140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 163, 179, 310, 326, 358, 620, 652, 716, 815, 895, 1630, 1790, 3260, 3580, 5053, 5549, 10106, 11098, 20212, 22196, 25265, 27745, 29177, 50530, 55490, 58354, 101060, 110980, 116708, 145885, 291770, 583540, 904487, 1808974, 3617948, 4522435, 9044870, 18089740]

約数ペア:

[(1, 18089740), (2, 9044870), (4, 4522435), (5, 3617948), (10, 1808974), (20, 904487), (31, 583540), (62, 291770), (124, 145885), (155, 116708), (163, 110980), (179, 101060), (310, 58354), (326, 55490), (358, 50530), (620, 29177), (652, 27745), (716, 25265), (815, 22196), (895, 20212), (1630, 11098), (1790, 10106), (3260, 5549), (3580, 5053)]