28908680

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{2309}}^1$

素因数の和:2633

約数の個数: 32

約数和(自身を含む): 65280600

約数和(自身を除く): 36371920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2309, 2504, 3130, 4618, 6260, 9236, 11545, 12520, 18472, 23090, 46180, 92360, 722717, 1445434, 2890868, 3613585, 5781736, 7227170, 14454340, 28908680]

約数ペア:

[(1, 28908680), (2, 14454340), (4, 7227170), (5, 5781736), (8, 3613585), (10, 2890868), (20, 1445434), (40, 722717), (313, 92360), (626, 46180), (1252, 23090), (1565, 18472), (2309, 12520), (2504, 11545), (3130, 9236), (4618, 6260)]