28560725

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:389

約数の個数: 24

約数和(自身を含む): 36664320

約数和(自身を除く): 8103595

約数列:

[1, 5, 25, 47, 109, 223, 235, 545, 1115, 1175, 2725, 5123, 5575, 10481, 24307, 25615, 52405, 121535, 128075, 262025, 607675, 1142429, 5712145, 28560725]

約数ペア:

[(1, 28560725), (5, 5712145), (25, 1142429), (47, 607675), (109, 262025), (223, 128075), (235, 121535), (545, 52405), (1115, 25615), (1175, 24307), (2725, 10481), (5123, 5575)]