20857365

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3593}}^1$

素因数の和:3650

約数の個数: 32

約数和(自身を含む): 37952640

約数和(自身を除く): 17095275

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3593, 5805, 10779, 17965, 32337, 53895, 97011, 154499, 161685, 463497, 485055, 772495, 1390491, 2317485, 4171473, 6952455, 20857365]

約数ペア:

[(1, 20857365), (3, 6952455), (5, 4171473), (9, 2317485), (15, 1390491), (27, 772495), (43, 485055), (45, 463497), (129, 161685), (135, 154499), (215, 97011), (387, 53895), (645, 32337), (1161, 17965), (1935, 10779), (3593, 5805)]