28010980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45179}}^1$

素因数の和:45219

約数の個数: 24

約数和(自身を含む): 60721920

約数和(自身を除く): 32710940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 45179, 90358, 180716, 225895, 451790, 903580, 1400549, 2801098, 5602196, 7002745, 14005490, 28010980]

約数ペア:

[(1, 28010980), (2, 14005490), (4, 7002745), (5, 5602196), (10, 2801098), (20, 1400549), (31, 903580), (62, 451790), (124, 225895), (155, 180716), (310, 90358), (620, 45179)]