21176080

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1187}}^1$

素因数の和:1423

約数の個数: 40

約数和(自身を含む): 49496832

約数和(自身を除く): 28320752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1187, 1784, 2230, 2374, 3568, 4460, 4748, 5935, 8920, 9496, 11870, 17840, 18992, 23740, 47480, 94960, 264701, 529402, 1058804, 1323505, 2117608, 2647010, 4235216, 5294020, 10588040, 21176080]

約数ペア:

[(1, 21176080), (2, 10588040), (4, 5294020), (5, 4235216), (8, 2647010), (10, 2117608), (16, 1323505), (20, 1058804), (40, 529402), (80, 264701), (223, 94960), (446, 47480), (892, 23740), (1115, 18992), (1187, 17840), (1784, 11870), (2230, 9496), (2374, 8920), (3568, 5935), (4460, 4748)]