21200125

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{5471}}^1$

素因数の和:5517

約数の個数: 16

約数和(自身を含む): 27316224

約数和(自身を除く): 6116099

約数列:

[1, 5, 25, 31, 125, 155, 775, 3875, 5471, 27355, 136775, 169601, 683875, 848005, 4240025, 21200125]

約数ペア:

[(1, 21200125), (5, 4240025), (25, 848005), (31, 683875), (125, 169601), (155, 136775), (775, 27355), (3875, 5471)]