21388267005

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29099683}}^1$

素因数の和:29099705

約数の個数: 24

約数和(自身を含む): 39808367712

約数和(自身を除く): 18420100707

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 29099683, 87299049, 145498415, 203697781, 436495245, 611093343, 1018488905, 1425884467, 3055466715, 4277653401, 7129422335, 21388267005]

約数ペア:

[(1, 21388267005), (3, 7129422335), (5, 4277653401), (7, 3055466715), (15, 1425884467), (21, 1018488905), (35, 611093343), (49, 436495245), (105, 203697781), (147, 145498415), (245, 87299049), (735, 29099683)]