21789235

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{3319}}^1$

素因数の和:3438

約数の個数: 16

約数和(自身を含む): 28445760

約数和(自身を除く): 6656525

約数列:

[1, 5, 13, 65, 101, 505, 1313, 3319, 6565, 16595, 43147, 215735, 335219, 1676095, 4357847, 21789235]

約数ペア:

[(1, 21789235), (5, 4357847), (13, 1676095), (65, 335219), (101, 215735), (505, 43147), (1313, 16595), (3319, 6565)]