21105967984

素因数分解:

$2^4\times {\mathrm{2713}}^1\times {\mathrm{486223}}^1$

素因数の和:488944

約数の個数: 20

約数和(自身を含む): 40907970016

約数和(自身を除く): 19802002032

約数列:

[1, 2, 4, 8, 16, 2713, 5426, 10852, 21704, 43408, 486223, 972446, 1944892, 3889784, 7779568, 1319122999, 2638245998, 5276491996, 10552983992, 21105967984]

約数ペア:

[(1, 21105967984), (2, 10552983992), (4, 5276491996), (8, 2638245998), (16, 1319122999), (2713, 7779568), (5426, 3889784), (10852, 1944892), (21704, 972446), (43408, 486223)]