20840169

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2749}}^1$

素因数の和:2797

約数の個数: 24

約数和(自身を含む): 33528000

約数和(自身を除く): 12687831

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 2749, 7581, 8247, 19243, 52231, 57729, 156693, 365617, 992389, 1096851, 2977167, 6946723, 20840169]

約数ペア:

[(1, 20840169), (3, 6946723), (7, 2977167), (19, 1096851), (21, 992389), (57, 365617), (133, 156693), (361, 57729), (399, 52231), (1083, 19243), (2527, 8247), (2749, 7581)]