20815160

素因数分解:

$2^3\times 5^1\times {\mathrm{520379}}^1$

素因数の和:520390

約数の個数: 16

約数和(自身を含む): 46834200

約数和(自身を除く): 26019040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520379, 1040758, 2081516, 2601895, 4163032, 5203790, 10407580, 20815160]

約数ペア:

[(1, 20815160), (2, 10407580), (4, 5203790), (5, 4163032), (8, 2601895), (10, 2081516), (20, 1040758), (40, 520379)]