21093765

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2609}}^1$

素因数の和:2642

約数の個数: 48

約数和(自身を含む): 42845760

約数和(自身を除く): 21751995

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2609, 2695, 7827, 8085, 13045, 18263, 28699, 39135, 54789, 86097, 91315, 127841, 143495, 200893, 273945, 383523, 430485, 602679, 639205, 1004465, 1406251, 1917615, 3013395, 4218753, 7031255, 21093765]

約数ペア:

[(1, 21093765), (3, 7031255), (5, 4218753), (7, 3013395), (11, 1917615), (15, 1406251), (21, 1004465), (33, 639205), (35, 602679), (49, 430485), (55, 383523), (77, 273945), (105, 200893), (147, 143495), (165, 127841), (231, 91315), (245, 86097), (385, 54789), (539, 39135), (735, 28699), (1155, 18263), (1617, 13045), (2609, 8085), (2695, 7827)]