21130239

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 30989952

約数和(自身を除く): 9859713

約数列:

[1, 3, 13, 39, 71, 169, 213, 507, 587, 923, 1761, 2769, 7631, 11999, 22893, 35997, 41677, 99203, 125031, 297609, 541801, 1625403, 7043413, 21130239]

約数ペア:

[(1, 21130239), (3, 7043413), (13, 1625403), (39, 541801), (71, 297609), (169, 125031), (213, 99203), (507, 41677), (587, 35997), (923, 22893), (1761, 11999), (2769, 7631)]