20871441

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{233}}^1\times {\mathrm{269}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 31210920

約数和(自身を除く): 10339479

約数列:

[1, 3, 9, 37, 111, 233, 269, 333, 699, 807, 2097, 2421, 8621, 9953, 25863, 29859, 62677, 77589, 89577, 188031, 564093, 2319049, 6957147, 20871441]

約数ペア:

[(1, 20871441), (3, 6957147), (9, 2319049), (37, 564093), (111, 188031), (233, 89577), (269, 77589), (333, 62677), (699, 29859), (807, 25863), (2097, 9953), (2421, 8621)]