81794620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{215249}}^1$

素因数の和:215277

約数の個数: 24

約数和(自身を含む): 180810000

約数和(自身を除く): 99015380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 215249, 430498, 860996, 1076245, 2152490, 4089731, 4304980, 8179462, 16358924, 20448655, 40897310, 81794620]

約数ペア:

[(1, 81794620), (2, 40897310), (4, 20448655), (5, 16358924), (10, 8179462), (19, 4304980), (20, 4089731), (38, 2152490), (76, 1076245), (95, 860996), (190, 430498), (380, 215249)]