21544985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{523}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 32596992

約数和(自身を除く): 11052007

約数列:

[1, 5, 7, 11, 35, 55, 77, 107, 385, 523, 535, 749, 1177, 2615, 3661, 3745, 5753, 5885, 8239, 18305, 28765, 40271, 41195, 55961, 201355, 279805, 391727, 615571, 1958635, 3077855, 4308997, 21544985]

約数ペア:

[(1, 21544985), (5, 4308997), (7, 3077855), (11, 1958635), (35, 615571), (55, 391727), (77, 279805), (107, 201355), (385, 55961), (523, 41195), (535, 40271), (749, 28765), (1177, 18305), (2615, 8239), (3661, 5885), (3745, 5753)]