81990369

素因数分解:

$3^2\times {\mathrm{103}}^1\times {\mathrm{241}}^1\times {\mathrm{367}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 120403712

約数和(自身を除く): 38413343

約数列:

[1, 3, 9, 103, 241, 309, 367, 723, 927, 1101, 2169, 3303, 24823, 37801, 74469, 88447, 113403, 223407, 265341, 340209, 796023, 9110041, 27330123, 81990369]

約数ペア:

[(1, 81990369), (3, 27330123), (9, 9110041), (103, 796023), (241, 340209), (309, 265341), (367, 223407), (723, 113403), (927, 88447), (1101, 74469), (2169, 37801), (3303, 24823)]