21226390

素因数分解:

$2^1\times 5^1\times {\mathrm{659}}^1\times {\mathrm{3221}}^1$

素因数の和:3887

約数の個数: 16

約数和(自身を含む): 38277360

約数和(自身を除く): 17050970

約数列:

[1, 2, 5, 10, 659, 1318, 3221, 3295, 6442, 6590, 16105, 32210, 2122639, 4245278, 10613195, 21226390]

約数ペア:

[(1, 21226390), (2, 10613195), (5, 4245278), (10, 2122639), (659, 32210), (1318, 16105), (3221, 6590), (3295, 6442)]