21921415

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{11213}}^1$

素因数の和:11258

約数の個数: 16

約数和(自身を含む): 29066688

約数和(自身を除く): 7145273

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 11213, 56065, 190621, 257899, 953105, 1289495, 4384283, 21921415]

約数ペア:

[(1, 21921415), (5, 4384283), (17, 1289495), (23, 953105), (85, 257899), (115, 190621), (391, 56065), (1955, 11213)]