81705729

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{1217}}^1$

素因数の和:1389

約数の個数: 32

約数和(自身を含む): 130959360

約数和(自身を除く): 49253631

約数列:

[1, 3, 7, 21, 23, 69, 139, 161, 417, 483, 973, 1217, 2919, 3197, 3651, 8519, 9591, 22379, 25557, 27991, 67137, 83973, 169163, 195937, 507489, 587811, 1184141, 3552423, 3890749, 11672247, 27235243, 81705729]

約数ペア:

[(1, 81705729), (3, 27235243), (7, 11672247), (21, 3890749), (23, 3552423), (69, 1184141), (139, 587811), (161, 507489), (417, 195937), (483, 169163), (973, 83973), (1217, 67137), (2919, 27991), (3197, 25557), (3651, 22379), (8519, 9591)]