155220903920

素因数分解:

$2^4\times 5^1\times {\mathrm{1940261299}}^1$

素因数の和:1940261312

約数の個数: 20

約数和(自身を含む): 360888601800

約数和(自身を除く): 205667697880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1940261299, 3880522598, 7761045196, 9701306495, 15522090392, 19402612990, 31044180784, 38805225980, 77610451960, 155220903920]

約数ペア:

[(1, 155220903920), (2, 77610451960), (4, 38805225980), (5, 31044180784), (8, 19402612990), (10, 15522090392), (16, 9701306495), (20, 7761045196), (40, 3880522598), (80, 1940261299)]