20181657489

素因数分解:

$3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1259543}}^1$

素因数の和:1259669

約数の個数: 24

約数和(自身を含む): 31589363520

約数和(自身を除く): 11407706031

約数列:

[1, 3, 7, 21, 49, 109, 147, 327, 763, 2289, 5341, 16023, 1259543, 3778629, 8816801, 26450403, 61717607, 137290187, 185152821, 411870561, 961031309, 2883093927, 6727219163, 20181657489]

約数ペア:

[(1, 20181657489), (3, 6727219163), (7, 2883093927), (21, 961031309), (49, 411870561), (109, 185152821), (147, 137290187), (327, 61717607), (763, 26450403), (2289, 8816801), (5341, 3778629), (16023, 1259543)]