20688447

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{1297}}^1$

素因数の和:1722

約数の個数: 16

約数和(自身を含む): 29802080

約数和(自身を除く): 9113633

約数列:

[1, 3, 13, 39, 409, 1227, 1297, 3891, 5317, 15951, 16861, 50583, 530473, 1591419, 6896149, 20688447]

約数ペア:

[(1, 20688447), (3, 6896149), (13, 1591419), (39, 530473), (409, 50583), (1227, 16861), (1297, 15951), (3891, 5317)]