19787174

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{21937}}^1$

素因数の和:21991

約数の個数: 16

約数和(自身を含む): 33170256

約数和(自身を除く): 13383082

約数列:

[1, 2, 11, 22, 41, 82, 451, 902, 21937, 43874, 241307, 482614, 899417, 1798834, 9893587, 19787174]

約数ペア:

[(1, 19787174), (2, 9893587), (11, 1798834), (22, 899417), (41, 482614), (82, 241307), (451, 43874), (902, 21937)]