21135556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23909}}^1$

素因数の和:23943

約数の個数: 24

約数和(自身を含む): 42177240

約数和(自身を除く): 21041684

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884, 23909, 47818, 95636, 310817, 406453, 621634, 812906, 1243268, 1625812, 5283889, 10567778, 21135556]

約数ペア:

[(1, 21135556), (2, 10567778), (4, 5283889), (13, 1625812), (17, 1243268), (26, 812906), (34, 621634), (52, 406453), (68, 310817), (221, 95636), (442, 47818), (884, 23909)]