128212510

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{2029}}^1$

素因数の和:2196

約数の個数: 32

約数和(自身を含む): 236779200

約数和(自身を除く): 108566690

約数列:

[1, 2, 5, 10, 71, 89, 142, 178, 355, 445, 710, 890, 2029, 4058, 6319, 10145, 12638, 20290, 31595, 63190, 144059, 180581, 288118, 361162, 720295, 902905, 1440590, 1805810, 12821251, 25642502, 64106255, 128212510]

約数ペア:

[(1, 128212510), (2, 64106255), (5, 25642502), (10, 12821251), (71, 1805810), (89, 1440590), (142, 902905), (178, 720295), (355, 361162), (445, 288118), (710, 180581), (890, 144059), (2029, 63190), (4058, 31595), (6319, 20290), (10145, 12638)]