20503119

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10729}}^1$

素因数の和:10759

約数の個数: 24

約数和(自身を含む): 34250160

約数和(自身を除く): 13747041

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10729, 32187, 75103, 139477, 225309, 418431, 525721, 976339, 1577163, 2929017, 6834373, 20503119]

約数ペア:

[(1, 20503119), (3, 6834373), (7, 2929017), (13, 1577163), (21, 976339), (39, 525721), (49, 418431), (91, 225309), (147, 139477), (273, 75103), (637, 32187), (1911, 10729)]