21799115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{2221}}^1$

素因数の和:2390

約数の個数: 16

約数和(自身を含む): 28370496

約数和(自身を除く): 6571381

約数列:

[1, 5, 13, 65, 151, 755, 1963, 2221, 9815, 11105, 28873, 144365, 335371, 1676855, 4359823, 21799115]

約数ペア:

[(1, 21799115), (5, 4359823), (13, 1676855), (65, 335371), (151, 144365), (755, 28873), (1963, 11105), (2221, 9815)]