21900125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{13477}}^1$

素因数の和:13505

約数の個数: 16

約数和(自身を含む): 29435952

約数和(自身を除く): 7535827

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 13477, 67385, 175201, 336925, 876005, 1684625, 4380025, 21900125]

約数ペア:

[(1, 21900125), (5, 4380025), (13, 1684625), (25, 876005), (65, 336925), (125, 175201), (325, 67385), (1625, 13477)]