20256405

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1423}}^1$

素因数の和:1517

約数の個数: 32

約数和(自身を含む): 35406336

約数和(自身を除く): 15149931

約数列:

[1, 3, 5, 13, 15, 39, 65, 73, 195, 219, 365, 949, 1095, 1423, 2847, 4269, 4745, 7115, 14235, 18499, 21345, 55497, 92495, 103879, 277485, 311637, 519395, 1350427, 1558185, 4051281, 6752135, 20256405]

約数ペア:

[(1, 20256405), (3, 6752135), (5, 4051281), (13, 1558185), (15, 1350427), (39, 519395), (65, 311637), (73, 277485), (195, 103879), (219, 92495), (365, 55497), (949, 21345), (1095, 18499), (1423, 14235), (2847, 7115), (4269, 4745)]