21168156740

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10911421}}^1$

素因数の和:10911527

約数の個数: 24

約数和(自身を含む): 44911412952

約数和(自身を除く): 23743256212

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10911421, 21822842, 43645684, 54557105, 109114210, 218228420, 1058407837, 2116815674, 4233631348, 5292039185, 10584078370, 21168156740]

約数ペア:

[(1, 21168156740), (2, 10584078370), (4, 5292039185), (5, 4233631348), (10, 2116815674), (20, 1058407837), (97, 218228420), (194, 109114210), (388, 54557105), (485, 43645684), (970, 21822842), (1940, 10911421)]