21024440

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2357}}^1$

素因数の和:2591

約数の個数: 32

約数和(自身を含む): 47537280

約数和(自身を除く): 26512840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 2357, 4460, 4714, 8920, 9428, 11785, 18856, 23570, 47140, 94280, 525611, 1051222, 2102444, 2628055, 4204888, 5256110, 10512220, 21024440]

約数ペア:

[(1, 21024440), (2, 10512220), (4, 5256110), (5, 4204888), (8, 2628055), (10, 2102444), (20, 1051222), (40, 525611), (223, 94280), (446, 47140), (892, 23570), (1115, 18856), (1784, 11785), (2230, 9428), (2357, 8920), (4460, 4714)]