20418657

素因数分解:

$3^1\times 7^1\times {\mathrm{653}}^1\times {\mathrm{1489}}^1$

素因数の和:2152

約数の個数: 16

約数和(自身を含む): 31182720

約数和(自身を除く): 10764063

約数列:

[1, 3, 7, 21, 653, 1489, 1959, 4467, 4571, 10423, 13713, 31269, 972317, 2916951, 6806219, 20418657]

約数ペア:

[(1, 20418657), (3, 6806219), (7, 2916951), (21, 972317), (653, 31269), (1489, 13713), (1959, 10423), (4467, 4571)]