21355856

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21881}}^1$

素因数の和:21950

約数の個数: 20

約数和(自身を含む): 42057204

約数和(自身を除く): 20701348

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21881, 43762, 87524, 175048, 350096, 1334741, 2669482, 5338964, 10677928, 21355856]

約数ペア:

[(1, 21355856), (2, 10677928), (4, 5338964), (8, 2669482), (16, 1334741), (61, 350096), (122, 175048), (244, 87524), (488, 43762), (976, 21881)]