20645547

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1019

約数の個数: 24

約数和(自身を含む): 30533184

約数和(自身を除く): 9887637

約数列:

[1, 3, 13, 39, 43, 129, 169, 507, 559, 947, 1677, 2841, 7267, 12311, 21801, 36933, 40721, 122163, 160043, 480129, 529373, 1588119, 6881849, 20645547]

約数ペア:

[(1, 20645547), (3, 6881849), (13, 1588119), (39, 529373), (43, 480129), (129, 160043), (169, 122163), (507, 40721), (559, 36933), (947, 21801), (1677, 12311), (2841, 7267)]