20914505

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{1249}}^1$

素因数の和:1468

約数の個数: 16

約数和(自身を含む): 26730000

約数和(自身を除く): 5815495

約数列:

[1, 5, 17, 85, 197, 985, 1249, 3349, 6245, 16745, 21233, 106165, 246053, 1230265, 4182901, 20914505]

約数ペア:

[(1, 20914505), (5, 4182901), (17, 1230265), (85, 246053), (197, 106165), (985, 21233), (1249, 16745), (3349, 6245)]