21740680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41809}}^1$

素因数の和:41833

約数の個数: 32

約数和(自身を含む): 52680600

約数和(自身を除く): 30939920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41809, 83618, 167236, 209045, 334472, 418090, 543517, 836180, 1087034, 1672360, 2174068, 2717585, 4348136, 5435170, 10870340, 21740680]

約数ペア:

[(1, 21740680), (2, 10870340), (4, 5435170), (5, 4348136), (8, 2717585), (10, 2174068), (13, 1672360), (20, 1087034), (26, 836180), (40, 543517), (52, 418090), (65, 334472), (104, 209045), (130, 167236), (260, 83618), (520, 41809)]