21975981

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1\times {\mathrm{307}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 29804544

約数和(自身を除く): 7828563

約数列:

[1, 3, 107, 223, 307, 321, 669, 921, 23861, 32849, 68461, 71583, 98547, 205383, 7325327, 21975981]

約数ペア:

[(1, 21975981), (3, 7325327), (107, 205383), (223, 98547), (307, 71583), (321, 68461), (669, 32849), (921, 23861)]