21475225

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1559}}^1$

素因数の和:1617

約数の個数: 24

約数和(自身を含む): 29016000

約数和(自身を除く): 7540775

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 1559, 2755, 7795, 13775, 29621, 38975, 45211, 148105, 226055, 740525, 859009, 1130275, 4295045, 21475225]

約数ペア:

[(1, 21475225), (5, 4295045), (19, 1130275), (25, 859009), (29, 740525), (95, 226055), (145, 148105), (475, 45211), (551, 38975), (725, 29621), (1559, 13775), (2755, 7795)]