21236715

素因数分解:

$3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3347}}^1$

素因数の和:3408

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 17332245

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 135, 141, 235, 423, 705, 1269, 2115, 3347, 6345, 10041, 16735, 30123, 50205, 90369, 150615, 157309, 451845, 471927, 786545, 1415781, 2359635, 4247343, 7078905, 21236715]

約数ペア:

[(1, 21236715), (3, 7078905), (5, 4247343), (9, 2359635), (15, 1415781), (27, 786545), (45, 471927), (47, 451845), (135, 157309), (141, 150615), (235, 90369), (423, 50205), (705, 30123), (1269, 16735), (2115, 10041), (3347, 6345)]