981399170

素因数分解:

$2^1\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{49391}}^1$

素因数の和:51385

約数の個数: 16

約数和(自身を含む): 1767443328

約数和(自身を除く): 786044158

約数列:

[1, 2, 5, 10, 1987, 3974, 9935, 19870, 49391, 98782, 246955, 493910, 98139917, 196279834, 490699585, 981399170]

約数ペア:

[(1, 981399170), (2, 490699585), (5, 196279834), (10, 98139917), (1987, 493910), (3974, 246955), (9935, 98782), (19870, 49391)]