21477740

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{11071}}^1$

素因数の和:11177

約数の個数: 24

約数和(自身を含む): 45572352

約数和(自身を除く): 24094612

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 11071, 22142, 44284, 55355, 110710, 221420, 1073887, 2147774, 4295548, 5369435, 10738870, 21477740]

約数ペア:

[(1, 21477740), (2, 10738870), (4, 5369435), (5, 4295548), (10, 2147774), (20, 1073887), (97, 221420), (194, 110710), (388, 55355), (485, 44284), (970, 22142), (1940, 11071)]