261569020

素因数分解:

$2^2\times 5^1\times {\mathrm{1559}}^1\times {\mathrm{8389}}^1$

素因数の和:9957

約数の個数: 24

約数和(自身を含む): 549712800

約数和(自身を除く): 288143780

約数列:

[1, 2, 4, 5, 10, 20, 1559, 3118, 6236, 7795, 8389, 15590, 16778, 31180, 33556, 41945, 83890, 167780, 13078451, 26156902, 52313804, 65392255, 130784510, 261569020]

約数ペア:

[(1, 261569020), (2, 130784510), (4, 65392255), (5, 52313804), (10, 26156902), (20, 13078451), (1559, 167780), (3118, 83890), (6236, 41945), (7795, 33556), (8389, 31180), (15590, 16778)]