20918538

素因数分解:

$2^1\times 3^2\times {\mathrm{331}}^1\times {\mathrm{3511}}^1$

素因数の和:3850

約数の個数: 24

約数和(自身を含む): 45473376

約数和(自身を除く): 24554838

約数列:

[1, 2, 3, 6, 9, 18, 331, 662, 993, 1986, 2979, 3511, 5958, 7022, 10533, 21066, 31599, 63198, 1162141, 2324282, 3486423, 6972846, 10459269, 20918538]

約数ペア:

[(1, 20918538), (2, 10459269), (3, 6972846), (6, 3486423), (9, 2324282), (18, 1162141), (331, 63198), (662, 31599), (993, 21066), (1986, 10533), (2979, 7022), (3511, 5958)]