21817245

素因数分解:

$3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{5407}}^1$

素因数の和:5684

約数の個数: 16

約数和(自身を含む): 35043840

約数和(自身を除く): 13226595

約数列:

[1, 3, 5, 15, 269, 807, 1345, 4035, 5407, 16221, 27035, 81105, 1454483, 4363449, 7272415, 21817245]

約数ペア:

[(1, 21817245), (3, 7272415), (5, 4363449), (15, 1454483), (269, 81105), (807, 27035), (1345, 16221), (4035, 5407)]