16684521

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 26484480

約数和(自身を除く): 9799959

約数列:

[1, 3, 7, 21, 37, 109, 111, 197, 259, 327, 591, 763, 777, 1379, 2289, 4033, 4137, 7289, 12099, 21473, 21867, 28231, 51023, 64419, 84693, 150311, 153069, 450933, 794501, 2383503, 5561507, 16684521]

約数ペア:

[(1, 16684521), (3, 5561507), (7, 2383503), (21, 794501), (37, 450933), (109, 153069), (111, 150311), (197, 84693), (259, 64419), (327, 51023), (591, 28231), (763, 21867), (777, 21473), (1379, 12099), (2289, 7289), (4033, 4137)]