21073507

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{631}}^1$

素因数の和:1018

約数の個数: 16

約数和(自身を含む): 26048512

約数和(自身を除く): 4975005

約数列:

[1, 7, 13, 91, 367, 631, 2569, 4417, 4771, 8203, 33397, 57421, 231577, 1621039, 3010501, 21073507]

約数ペア:

[(1, 21073507), (7, 3010501), (13, 1621039), (91, 231577), (367, 57421), (631, 33397), (2569, 8203), (4417, 4771)]