21065998

素因数分解:

$2^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:747

約数の個数: 16

約数和(自身を含む): 32085504

約数和(自身を除く): 11019506

約数列:

[1, 2, 127, 197, 254, 394, 421, 842, 25019, 50038, 53467, 82937, 106934, 165874, 10532999, 21065998]

約数ペア:

[(1, 21065998), (2, 10532999), (127, 165874), (197, 106934), (254, 82937), (394, 53467), (421, 50038), (842, 25019)]