20564408

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{821}}^1$

素因数の和:959

約数の個数: 32

約数和(自身を含む): 40245120

約数和(自身を除く): 19680712

約数列:

[1, 2, 4, 8, 31, 62, 101, 124, 202, 248, 404, 808, 821, 1642, 3131, 3284, 6262, 6568, 12524, 25048, 25451, 50902, 82921, 101804, 165842, 203608, 331684, 663368, 2570551, 5141102, 10282204, 20564408]

約数ペア:

[(1, 20564408), (2, 10282204), (4, 5141102), (8, 2570551), (31, 663368), (62, 331684), (101, 203608), (124, 165842), (202, 101804), (248, 82921), (404, 50902), (808, 25451), (821, 25048), (1642, 12524), (3131, 6568), (3284, 6262)]