81437181

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{1213}}^1$

素因数の和:1385

約数の個数: 32

約数和(自身を含む): 130529280

約数和(自身を除く): 49092099

約数列:

[1, 3, 7, 21, 23, 69, 139, 161, 417, 483, 973, 1213, 2919, 3197, 3639, 8491, 9591, 22379, 25473, 27899, 67137, 83697, 168607, 195293, 505821, 585879, 1180249, 3540747, 3877961, 11633883, 27145727, 81437181]

約数ペア:

[(1, 81437181), (3, 27145727), (7, 11633883), (21, 3877961), (23, 3540747), (69, 1180249), (139, 585879), (161, 505821), (417, 195293), (483, 168607), (973, 83697), (1213, 67137), (2919, 27899), (3197, 25473), (3639, 22379), (8491, 9591)]