21107475

素因数分解:

$3^2\times 5^2\times {\mathrm{93811}}^1$

素因数の和:93827

約数の個数: 18

約数和(自身を含む): 37806236

約数和(自身を除く): 16698761

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 93811, 281433, 469055, 844299, 1407165, 2345275, 4221495, 7035825, 21107475]

約数ペア:

[(1, 21107475), (3, 7035825), (5, 4221495), (9, 2345275), (15, 1407165), (25, 844299), (45, 469055), (75, 281433), (225, 93811)]