28216375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{20521}}^1$

素因数の和:20547

約数の個数: 16

約数和(自身を含む): 38417184

約数和(自身を除く): 10200809

約数列:

[1, 5, 11, 25, 55, 125, 275, 1375, 20521, 102605, 225731, 513025, 1128655, 2565125, 5643275, 28216375]

約数ペア:

[(1, 28216375), (5, 5643275), (11, 2565125), (25, 1128655), (55, 513025), (125, 225731), (275, 102605), (1375, 20521)]