2178020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8377}}^1$

素因数の和:8399

約数の個数: 24

約数和(自身を含む): 4926264

約数和(自身を除く): 2748244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 8377, 16754, 33508, 41885, 83770, 108901, 167540, 217802, 435604, 544505, 1089010, 2178020]

約数ペア:

[(1, 2178020), (2, 1089010), (4, 544505), (5, 435604), (10, 217802), (13, 167540), (20, 108901), (26, 83770), (52, 41885), (65, 33508), (130, 16754), (260, 8377)]