21321615

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29009}}^1$

素因数の和:29031

約数の個数: 24

約数和(自身を含む): 39685680

約数和(自身を除く): 18364065

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 29009, 87027, 145045, 203063, 435135, 609189, 1015315, 1421441, 3045945, 4264323, 7107205, 21321615]

約数ペア:

[(1, 21321615), (3, 7107205), (5, 4264323), (7, 3045945), (15, 1421441), (21, 1015315), (35, 609189), (49, 435135), (105, 203063), (147, 145045), (245, 87027), (735, 29009)]