656080

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:211

約数の個数: 40

約数和(自身を含む): 1562400

約数和(自身を除く): 906320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 139, 236, 278, 295, 472, 556, 590, 695, 944, 1112, 1180, 1390, 2224, 2360, 2780, 4720, 5560, 8201, 11120, 16402, 32804, 41005, 65608, 82010, 131216, 164020, 328040, 656080]

約数ペア:

[(1, 656080), (2, 328040), (4, 164020), (5, 131216), (8, 82010), (10, 65608), (16, 41005), (20, 32804), (40, 16402), (59, 11120), (80, 8201), (118, 5560), (139, 4720), (236, 2780), (278, 2360), (295, 2224), (472, 1390), (556, 1180), (590, 1112), (695, 944)]