19580561

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:693

約数の個数: 32

約数和(自身を含む): 27181056

約数和(自身を除く): 7600495

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 631, 1001, 2387, 2821, 4417, 4433, 6941, 8203, 19561, 31031, 48587, 57421, 90233, 136927, 215171, 254293, 631631, 1506197, 1780051, 2797223, 19580561]

約数ペア:

[(1, 19580561), (7, 2797223), (11, 1780051), (13, 1506197), (31, 631631), (77, 254293), (91, 215171), (143, 136927), (217, 90233), (341, 57421), (403, 48587), (631, 31031), (1001, 19561), (2387, 8203), (2821, 6941), (4417, 4433)]