20726576

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{397}}^1$

素因数の和:669

約数の個数: 40

約数和(自身を含む): 43528464

約数和(自身を除く): 22801888

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 251, 397, 502, 794, 1004, 1588, 2008, 3176, 3263, 4016, 5161, 6352, 6526, 10322, 13052, 20644, 26104, 41288, 52208, 82576, 99647, 199294, 398588, 797176, 1295411, 1594352, 2590822, 5181644, 10363288, 20726576]

約数ペア:

[(1, 20726576), (2, 10363288), (4, 5181644), (8, 2590822), (13, 1594352), (16, 1295411), (26, 797176), (52, 398588), (104, 199294), (208, 99647), (251, 82576), (397, 52208), (502, 41288), (794, 26104), (1004, 20644), (1588, 13052), (2008, 10322), (3176, 6526), (3263, 6352), (4016, 5161)]