22228880

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1999}}^1$

素因数の和:2151

約数の個数: 40

約数和(自身を含む): 52080000

約数和(自身を除く): 29851120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1999, 2224, 2780, 3998, 5560, 7996, 9995, 11120, 15992, 19990, 31984, 39980, 79960, 159920, 277861, 555722, 1111444, 1389305, 2222888, 2778610, 4445776, 5557220, 11114440, 22228880]

約数ペア:

[(1, 22228880), (2, 11114440), (4, 5557220), (5, 4445776), (8, 2778610), (10, 2222888), (16, 1389305), (20, 1111444), (40, 555722), (80, 277861), (139, 159920), (278, 79960), (556, 39980), (695, 31984), (1112, 19990), (1390, 15992), (1999, 11120), (2224, 9995), (2780, 7996), (3998, 5560)]