21123189

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{229}}^1\times {\mathrm{277}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 31586360

約数和(自身を除く): 10463171

約数列:

[1, 3, 9, 37, 111, 229, 277, 333, 687, 831, 2061, 2493, 8473, 10249, 25419, 30747, 63433, 76257, 92241, 190299, 570897, 2347021, 7041063, 21123189]

約数ペア:

[(1, 21123189), (3, 7041063), (9, 2347021), (37, 570897), (111, 190299), (229, 92241), (277, 76257), (333, 63433), (687, 30747), (831, 25419), (2061, 10249), (2493, 8473)]