20518095

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2447}}^1$

素因数の和:2511

約数の個数: 32

約数和(自身を含む): 36191232

約数和(自身を除く): 15673137

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2447, 2795, 7341, 8385, 12235, 31811, 36705, 95433, 105221, 159055, 315663, 477165, 526105, 1367873, 1578315, 4103619, 6839365, 20518095]

約数ペア:

[(1, 20518095), (3, 6839365), (5, 4103619), (13, 1578315), (15, 1367873), (39, 526105), (43, 477165), (65, 315663), (129, 159055), (195, 105221), (215, 95433), (559, 36705), (645, 31811), (1677, 12235), (2447, 8385), (2795, 7341)]