21055375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{15313}}^1$

素因数の和:15339

約数の個数: 16

約数和(自身を含む): 28667808

約数和(自身を除く): 7612433

約数列:

[1, 5, 11, 25, 55, 125, 275, 1375, 15313, 76565, 168443, 382825, 842215, 1914125, 4211075, 21055375]

約数ペア:

[(1, 21055375), (5, 4211075), (11, 1914125), (25, 842215), (55, 382825), (125, 168443), (275, 76565), (1375, 15313)]