20657945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53657}}^1$

素因数の和:53680

約数の個数: 16

約数和(自身を含む): 30907008

約数和(自身を除く): 10249063

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 53657, 268285, 375599, 590227, 1877995, 2951135, 4131589, 20657945]

約数ペア:

[(1, 20657945), (5, 4131589), (7, 2951135), (11, 1877995), (35, 590227), (55, 375599), (77, 268285), (385, 53657)]