21052048

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{3217}}^1$

素因数の和:3634

約数の個数: 20

約数和(自身を含む): 40900780

約数和(自身を除く): 19848732

約数列:

[1, 2, 4, 8, 16, 409, 818, 1636, 3217, 3272, 6434, 6544, 12868, 25736, 51472, 1315753, 2631506, 5263012, 10526024, 21052048]

約数ペア:

[(1, 21052048), (2, 10526024), (4, 5263012), (8, 2631506), (16, 1315753), (409, 51472), (818, 25736), (1636, 12868), (3217, 6544), (3272, 6434)]