21659080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17467}}^1$

素因数の和:17509

約数の個数: 32

約数和(自身を含む): 50307840

約数和(自身を除く): 28648760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17467, 34934, 69868, 87335, 139736, 174670, 349340, 541477, 698680, 1082954, 2165908, 2707385, 4331816, 5414770, 10829540, 21659080]

約数ペア:

[(1, 21659080), (2, 10829540), (4, 5414770), (5, 4331816), (8, 2707385), (10, 2165908), (20, 1082954), (31, 698680), (40, 541477), (62, 349340), (124, 174670), (155, 139736), (248, 87335), (310, 69868), (620, 34934), (1240, 17467)]