21738910

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2011}}^1$

素因数の和:2088

約数の個数: 32

約数和(自身を含む): 41720832

約数和(自身を除く): 19981922

約数列:

[1, 2, 5, 10, 23, 46, 47, 94, 115, 230, 235, 470, 1081, 2011, 2162, 4022, 5405, 10055, 10810, 20110, 46253, 92506, 94517, 189034, 231265, 462530, 472585, 945170, 2173891, 4347782, 10869455, 21738910]

約数ペア:

[(1, 21738910), (2, 10869455), (5, 4347782), (10, 2173891), (23, 945170), (46, 472585), (47, 462530), (94, 231265), (115, 189034), (230, 94517), (235, 92506), (470, 46253), (1081, 20110), (2011, 10810), (2162, 10055), (4022, 5405)]