7780025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1489}}^1$

素因数の和:1529

約数の個数: 24

約数和(自身を含む): 11085600

約数和(自身を除く): 3305575

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 1489, 5225, 7445, 16379, 28291, 37225, 81895, 141455, 311201, 409475, 707275, 1556005, 7780025]

約数ペア:

[(1, 7780025), (5, 1556005), (11, 707275), (19, 409475), (25, 311201), (55, 141455), (95, 81895), (209, 37225), (275, 28291), (475, 16379), (1045, 7445), (1489, 5225)]