21339860

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{2017}}^1$

素因数の和:2072

約数の個数: 36

約数和(自身を含む): 46870068

約数和(自身を除く): 25530208

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 529, 1058, 2017, 2116, 2645, 4034, 5290, 8068, 10085, 10580, 20170, 40340, 46391, 92782, 185564, 231955, 463910, 927820, 1066993, 2133986, 4267972, 5334965, 10669930, 21339860]

約数ペア:

[(1, 21339860), (2, 10669930), (4, 5334965), (5, 4267972), (10, 2133986), (20, 1066993), (23, 927820), (46, 463910), (92, 231955), (115, 185564), (230, 92782), (460, 46391), (529, 40340), (1058, 20170), (2017, 10580), (2116, 10085), (2645, 8068), (4034, 5290)]