21498085

素因数分解:

$5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1579}}^1$

素因数の和:1980

約数の個数: 16

約数和(自身を含む): 29577600

約数和(自身を除く): 8079515

約数列:

[1, 5, 7, 35, 389, 1579, 1945, 2723, 7895, 11053, 13615, 55265, 614231, 3071155, 4299617, 21498085]

約数ペア:

[(1, 21498085), (5, 4299617), (7, 3071155), (35, 614231), (389, 55265), (1579, 13615), (1945, 11053), (2723, 7895)]