21581254

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1\times {\mathrm{461}}^1$

素因数の和:815

約数の個数: 16

約数和(自身を含む): 32931360

約数和(自身を除く): 11350106

約数列:

[1, 2, 89, 178, 263, 461, 526, 922, 23407, 41029, 46814, 82058, 121243, 242486, 10790627, 21581254]

約数ペア:

[(1, 21581254), (2, 10790627), (89, 242486), (178, 121243), (263, 82058), (461, 46814), (526, 41029), (922, 23407)]