20685285

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3307}}^1$

素因数の和:3457

約数の個数: 24

約数和(自身を含む): 36123360

約数和(自身を除く): 15438075

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3307, 6255, 9921, 16535, 29763, 49605, 148815, 459673, 1379019, 2298365, 4137057, 6895095, 20685285]

約数ペア:

[(1, 20685285), (3, 6895095), (5, 4137057), (9, 2298365), (15, 1379019), (45, 459673), (139, 148815), (417, 49605), (695, 29763), (1251, 16535), (2085, 9921), (3307, 6255)]