20042920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4597}}^1$

素因数の和:4717

約数の個数: 32

約数和(自身を含む): 45520200

約数和(自身を除く): 25477280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4597, 9194, 18388, 22985, 36776, 45970, 91940, 183880, 501073, 1002146, 2004292, 2505365, 4008584, 5010730, 10021460, 20042920]

約数ペア:

[(1, 20042920), (2, 10021460), (4, 5010730), (5, 4008584), (8, 2505365), (10, 2004292), (20, 1002146), (40, 501073), (109, 183880), (218, 91940), (436, 45970), (545, 36776), (872, 22985), (1090, 18388), (2180, 9194), (4360, 4597)]