21085005

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{37991}}^1$

素因数の和:38036

約数の個数: 16

約数和(自身を含む): 34648704

約数和(自身を除く): 13563699

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 37991, 113973, 189955, 569865, 1405667, 4217001, 7028335, 21085005]

約数ペア:

[(1, 21085005), (3, 7028335), (5, 4217001), (15, 1405667), (37, 569865), (111, 189955), (185, 113973), (555, 37991)]