998020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 2116800

約数和(自身を除く): 1118780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 359, 556, 695, 718, 1390, 1436, 1795, 2780, 3590, 7180, 49901, 99802, 199604, 249505, 499010, 998020]

約数ペア:

[(1, 998020), (2, 499010), (4, 249505), (5, 199604), (10, 99802), (20, 49901), (139, 7180), (278, 3590), (359, 2780), (556, 1795), (695, 1436), (718, 1390)]