21086845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{6121}}^1$

素因数の和:6192

約数の個数: 16

約数和(自身を含む): 27769392

約数和(自身を除く): 6682547

約数列:

[1, 5, 13, 53, 65, 265, 689, 3445, 6121, 30605, 79573, 324413, 397865, 1622065, 4217369, 21086845]

約数ペア:

[(1, 21086845), (5, 4217369), (13, 1622065), (53, 397865), (65, 324413), (265, 79573), (689, 30605), (3445, 6121)]