20287854

素因数分解:

$2^1\times 3^3\times {\mathrm{157}}^1\times {\mathrm{2393}}^1$

素因数の和:2561

約数の個数: 32

約数和(自身を含む): 45390240

約数和(自身を除く): 25102386

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 157, 314, 471, 942, 1413, 2393, 2826, 4239, 4786, 7179, 8478, 14358, 21537, 43074, 64611, 129222, 375701, 751402, 1127103, 2254206, 3381309, 6762618, 10143927, 20287854]

約数ペア:

[(1, 20287854), (2, 10143927), (3, 6762618), (6, 3381309), (9, 2254206), (18, 1127103), (27, 751402), (54, 375701), (157, 129222), (314, 64611), (471, 43074), (942, 21537), (1413, 14358), (2393, 8478), (2826, 7179), (4239, 4786)]