21909542005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1021}}^1\times {\mathrm{6229}}^1$

素因数の和:7321

約数の個数: 32

約数和(自身を含む): 28880984160

約数和(自身を除く): 6971442155

約数列:

[1, 5, 13, 53, 65, 265, 689, 1021, 3445, 5105, 6229, 13273, 31145, 54113, 66365, 80977, 270565, 330137, 404885, 703469, 1650685, 3517345, 4291781, 6359809, 21458905, 31799045, 82677517, 337069877, 413387585, 1685349385, 4381908401, 21909542005]

約数ペア:

[(1, 21909542005), (5, 4381908401), (13, 1685349385), (53, 413387585), (65, 337069877), (265, 82677517), (689, 31799045), (1021, 21458905), (3445, 6359809), (5105, 4291781), (6229, 3517345), (13273, 1650685), (31145, 703469), (54113, 404885), (66365, 330137), (80977, 270565)]