21091245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{200869}}^1$

素因数の和:200884

約数の個数: 16

約数和(自身を含む): 38567040

約数和(自身を除く): 17475795

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 200869, 602607, 1004345, 1406083, 3013035, 4218249, 7030415, 21091245]

約数ペア:

[(1, 21091245), (3, 7030415), (5, 4218249), (7, 3013035), (15, 1406083), (21, 1004345), (35, 602607), (105, 200869)]