212399565

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{288979}}^1$

素因数の和:289001

約数の個数: 24

約数和(自身を含む): 395324640

約数和(自身を除く): 182925075

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 288979, 866937, 1444895, 2022853, 4334685, 6068559, 10114265, 14159971, 30342795, 42479913, 70799855, 212399565]

約数ペア:

[(1, 212399565), (3, 70799855), (5, 42479913), (7, 30342795), (15, 14159971), (21, 10114265), (35, 6068559), (49, 4334685), (105, 2022853), (147, 1444895), (245, 866937), (735, 288979)]