20877800

素因数分解:

$2^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{751}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 48955200

約数和(自身を除く): 28077400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 139, 200, 278, 556, 695, 751, 1112, 1390, 1502, 2780, 3004, 3475, 3755, 5560, 6008, 6950, 7510, 13900, 15020, 18775, 27800, 30040, 37550, 75100, 104389, 150200, 208778, 417556, 521945, 835112, 1043890, 2087780, 2609725, 4175560, 5219450, 10438900, 20877800]

約数ペア:

[(1, 20877800), (2, 10438900), (4, 5219450), (5, 4175560), (8, 2609725), (10, 2087780), (20, 1043890), (25, 835112), (40, 521945), (50, 417556), (100, 208778), (139, 150200), (200, 104389), (278, 75100), (556, 37550), (695, 30040), (751, 27800), (1112, 18775), (1390, 15020), (1502, 13900), (2780, 7510), (3004, 6950), (3475, 6008), (3755, 5560)]