81286945

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41579}}^1$

素因数の和:41624

約数の個数: 16

約数和(自身を含む): 107775360

約数和(自身を除く): 26488415

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 41579, 207895, 706843, 956317, 3534215, 4781585, 16257389, 81286945]

約数ペア:

[(1, 81286945), (5, 16257389), (17, 4781585), (23, 3534215), (85, 956317), (115, 706843), (391, 207895), (1955, 41579)]