17965025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{331}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 24206784

約数和(自身を除く): 6241759

約数列:

[1, 5, 13, 25, 65, 167, 325, 331, 835, 1655, 2171, 4175, 4303, 8275, 10855, 21515, 54275, 55277, 107575, 276385, 718601, 1381925, 3593005, 17965025]

約数ペア:

[(1, 17965025), (5, 3593005), (13, 1381925), (25, 718601), (65, 276385), (167, 107575), (325, 55277), (331, 54275), (835, 21515), (1655, 10855), (2171, 8275), (4175, 4303)]