19640125

素因数分解:

$5^3\times {\mathrm{47}}^1\times {\mathrm{3343}}^1$

素因数の和:3405

約数の個数: 16

約数和(自身を含む): 25039872

約数和(自身を除く): 5399747

約数列:

[1, 5, 25, 47, 125, 235, 1175, 3343, 5875, 16715, 83575, 157121, 417875, 785605, 3928025, 19640125]

約数ペア:

[(1, 19640125), (5, 3928025), (25, 785605), (47, 417875), (125, 157121), (235, 83575), (1175, 16715), (3343, 5875)]