21273385

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{20959}}^1$

素因数の和:21000

約数の個数: 16

約数和(自身を含む): 30182400

約数和(自身を除く): 8909015

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 20959, 104795, 146713, 607811, 733565, 3039055, 4254677, 21273385]

約数ペア:

[(1, 21273385), (5, 4254677), (7, 3039055), (29, 733565), (35, 607811), (145, 146713), (203, 104795), (1015, 20959)]