21501670

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{4127}}^1$

素因数の和:4655

約数の個数: 16

約数和(自身を含む): 38786688

約数和(自身を除く): 17285018

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 4127, 5210, 8254, 20635, 41270, 2150167, 4300334, 10750835, 21501670]

約数ペア:

[(1, 21501670), (2, 10750835), (5, 4300334), (10, 2150167), (521, 41270), (1042, 20635), (2605, 8254), (4127, 5210)]