21916665

素因数分解:

$3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5021}}^1$

素因数の和:5129

約数の個数: 24

約数和(自身を含む): 38388168

約数和(自身を除く): 16471503

約数列:

[1, 3, 5, 9, 15, 45, 97, 291, 485, 873, 1455, 4365, 5021, 15063, 25105, 45189, 75315, 225945, 487037, 1461111, 2435185, 4383333, 7305555, 21916665]

約数ペア:

[(1, 21916665), (3, 7305555), (5, 4383333), (9, 2435185), (15, 1461111), (45, 487037), (97, 225945), (291, 75315), (485, 45189), (873, 25105), (1455, 15063), (4365, 5021)]