18905913

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{883}}^1$

素因数の和:966

約数の個数: 32

約数和(自身を含む): 30692480

約数和(自身を除く): 11786567

約数列:

[1, 3, 9, 13, 27, 39, 61, 117, 183, 351, 549, 793, 883, 1647, 2379, 2649, 7137, 7947, 11479, 21411, 23841, 34437, 53863, 103311, 161589, 309933, 484767, 700219, 1454301, 2100657, 6301971, 18905913]

約数ペア:

[(1, 18905913), (3, 6301971), (9, 2100657), (13, 1454301), (27, 700219), (39, 484767), (61, 309933), (117, 161589), (183, 103311), (351, 53863), (549, 34437), (793, 23841), (883, 21411), (1647, 11479), (2379, 7947), (2649, 7137)]