21167260

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13397}}^1$

素因数の和:13485

約数の個数: 24

約数和(自身を含む): 45017280

約数和(自身を除く): 23850020

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13397, 26794, 53588, 66985, 133970, 267940, 1058363, 2116726, 4233452, 5291815, 10583630, 21167260]

約数ペア:

[(1, 21167260), (2, 10583630), (4, 5291815), (5, 4233452), (10, 2116726), (20, 1058363), (79, 267940), (158, 133970), (316, 66985), (395, 53588), (790, 26794), (1580, 13397)]