256410075

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^4$

素因数の和:185

約数の個数: 30

約数和(自身を含む): 434024924

約数和(自身を除く): 177614849

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 1849, 3225, 5547, 9245, 27735, 46225, 79507, 138675, 238521, 397535, 1192605, 1987675, 3418801, 5963025, 10256403, 17094005, 51282015, 85470025, 256410075]

約数ペア:

[(1, 256410075), (3, 85470025), (5, 51282015), (15, 17094005), (25, 10256403), (43, 5963025), (75, 3418801), (129, 1987675), (215, 1192605), (645, 397535), (1075, 238521), (1849, 138675), (3225, 79507), (5547, 46225), (9245, 27735)]