21902855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1597}}^1$

素因数の和:1826

約数の個数: 16

約数和(自身を含む): 28457184

約数和(自身を除く): 6554329

約数列:

[1, 5, 13, 65, 211, 1055, 1597, 2743, 7985, 13715, 20761, 103805, 336967, 1684835, 4380571, 21902855]

約数ペア:

[(1, 21902855), (5, 4380571), (13, 1684835), (65, 336967), (211, 103805), (1055, 20761), (1597, 13715), (2743, 7985)]