20012811

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{5639}}^1$

素因数の和:5675

約数の個数: 24

約数和(自身を含む): 33027840

約数和(自身を除く): 13015029

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 5639, 16917, 39473, 73307, 118419, 219921, 513149, 952991, 1539447, 2858973, 6670937, 20012811]

約数ペア:

[(1, 20012811), (3, 6670937), (7, 2858973), (13, 1539447), (21, 952991), (39, 513149), (91, 219921), (169, 118419), (273, 73307), (507, 39473), (1183, 16917), (3549, 5639)]