21156724

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{887}}^1$

素因数の和:1047

約数の個数: 24

約数和(自身を含む): 38041920

約数和(自身を除く): 16885196

約数列:

[1, 2, 4, 67, 89, 134, 178, 268, 356, 887, 1774, 3548, 5963, 11926, 23852, 59429, 78943, 118858, 157886, 237716, 315772, 5289181, 10578362, 21156724]

約数ペア:

[(1, 21156724), (2, 10578362), (4, 5289181), (67, 315772), (89, 237716), (134, 157886), (178, 118858), (268, 78943), (356, 59429), (887, 23852), (1774, 11926), (3548, 5963)]