21611529

素因数分解:

$3^4\times {\mathrm{367}}^1\times {\mathrm{727}}^1$

素因数の和:1106

約数の個数: 20

約数和(自身を含む): 32416384

約数和(自身を除く): 10804855

約数列:

[1, 3, 9, 27, 81, 367, 727, 1101, 2181, 3303, 6543, 9909, 19629, 29727, 58887, 266809, 800427, 2401281, 7203843, 21611529]

約数ペア:

[(1, 21611529), (3, 7203843), (9, 2401281), (27, 800427), (81, 266809), (367, 58887), (727, 29727), (1101, 19629), (2181, 9909), (3303, 6543)]