20973788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{2663}}^1$

素因数の和:2857

約数の個数: 24

約数和(自身を含む): 40279680

約数和(自身を除く): 19305892

約数列:

[1, 2, 4, 11, 22, 44, 179, 358, 716, 1969, 2663, 3938, 5326, 7876, 10652, 29293, 58586, 117172, 476677, 953354, 1906708, 5243447, 10486894, 20973788]

約数ペア:

[(1, 20973788), (2, 10486894), (4, 5243447), (11, 1906708), (22, 953354), (44, 476677), (179, 117172), (358, 58586), (716, 29293), (1969, 10652), (2663, 7876), (3938, 5326)]