80405420

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{48437}}^1$

素因数の和:48529

約数の個数: 24

約数和(自身を含む): 170889264

約数和(自身を除く): 90483844

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 48437, 96874, 193748, 242185, 484370, 968740, 4020271, 8040542, 16081084, 20101355, 40202710, 80405420]

約数ペア:

[(1, 80405420), (2, 40202710), (4, 20101355), (5, 16081084), (10, 8040542), (20, 4020271), (83, 968740), (166, 484370), (332, 242185), (415, 193748), (830, 96874), (1660, 48437)]