16821225

素因数分解:

$3^2\times 5^2\times {\mathrm{74761}}^1$

素因数の和:74777

約数の個数: 18

約数和(自身を含む): 30129086

約数和(自身を除く): 13307861

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 74761, 224283, 373805, 672849, 1121415, 1869025, 3364245, 5607075, 16821225]

約数ペア:

[(1, 16821225), (3, 5607075), (5, 3364245), (9, 1869025), (15, 1121415), (25, 672849), (45, 373805), (75, 224283), (225, 74761)]