20046987

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 31426560

約数和(自身を除く): 11379573

約数列:

[1, 3, 9, 27, 31, 43, 93, 129, 279, 387, 557, 837, 1161, 1333, 1671, 3999, 5013, 11997, 15039, 17267, 23951, 35991, 51801, 71853, 155403, 215559, 466209, 646677, 742481, 2227443, 6682329, 20046987]

約数ペア:

[(1, 20046987), (3, 6682329), (9, 2227443), (27, 742481), (31, 646677), (43, 466209), (93, 215559), (129, 155403), (279, 71853), (387, 51801), (557, 35991), (837, 23951), (1161, 17267), (1333, 15039), (1671, 11997), (3999, 5013)]