21187620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117709}}^1$

素因数の和:117724

約数の個数: 36

約数和(自身を含む): 64269660

約数和(自身を除く): 43082040

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117709, 235418, 353127, 470836, 588545, 706254, 1059381, 1177090, 1412508, 1765635, 2118762, 2354180, 3531270, 4237524, 5296905, 7062540, 10593810, 21187620]

約数ペア:

[(1, 21187620), (2, 10593810), (3, 7062540), (4, 5296905), (5, 4237524), (6, 3531270), (9, 2354180), (10, 2118762), (12, 1765635), (15, 1412508), (18, 1177090), (20, 1059381), (30, 706254), (36, 588545), (45, 470836), (60, 353127), (90, 235418), (180, 117709)]