20851455

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{3181}}^1$

素因数の和:3231

約数の個数: 32

約数和(自身を含む): 36656640

約数和(自身を除く): 15805185

約数列:

[1, 3, 5, 15, 19, 23, 57, 69, 95, 115, 285, 345, 437, 1311, 2185, 3181, 6555, 9543, 15905, 47715, 60439, 73163, 181317, 219489, 302195, 365815, 906585, 1097445, 1390097, 4170291, 6950485, 20851455]

約数ペア:

[(1, 20851455), (3, 6950485), (5, 4170291), (15, 1390097), (19, 1097445), (23, 906585), (57, 365815), (69, 302195), (95, 219489), (115, 181317), (285, 73163), (345, 60439), (437, 47715), (1311, 15905), (2185, 9543), (3181, 6555)]