647425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 24

約数和(自身を含む): 892800

約数和(自身を除く): 245375

約数列:

[1, 5, 19, 25, 29, 47, 95, 145, 235, 475, 551, 725, 893, 1175, 1363, 2755, 4465, 6815, 13775, 22325, 25897, 34075, 129485, 647425]

約数ペア:

[(1, 647425), (5, 129485), (19, 34075), (25, 25897), (29, 22325), (47, 13775), (95, 6815), (145, 4465), (235, 2755), (475, 1363), (551, 1175), (725, 893)]