42638620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19559}}^1$

素因数の和:19677

約数の個数: 24

約数和(自身を含む): 90367200

約数和(自身を除く): 47728580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 19559, 39118, 78236, 97795, 195590, 391180, 2131931, 4263862, 8527724, 10659655, 21319310, 42638620]

約数ペア:

[(1, 42638620), (2, 21319310), (4, 10659655), (5, 8527724), (10, 4263862), (20, 2131931), (109, 391180), (218, 195590), (436, 97795), (545, 78236), (1090, 39118), (2180, 19559)]