21989735

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{1601}}^1$

素因数の和:1714

約数の個数: 16

約数和(自身を含む): 27451872

約数和(自身を除く): 5462137

約数列:

[1, 5, 41, 67, 205, 335, 1601, 2747, 8005, 13735, 65641, 107267, 328205, 536335, 4397947, 21989735]

約数ペア:

[(1, 21989735), (5, 4397947), (41, 536335), (67, 328205), (205, 107267), (335, 65641), (1601, 13735), (2747, 8005)]