81782840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107609}}^1$

素因数の和:107639

約数の個数: 32

約数和(自身を含む): 193698000

約数和(自身を除く): 111915160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 107609, 215218, 430436, 538045, 860872, 1076090, 2044571, 2152180, 4089142, 4304360, 8178284, 10222855, 16356568, 20445710, 40891420, 81782840]

約数ペア:

[(1, 81782840), (2, 40891420), (4, 20445710), (5, 16356568), (8, 10222855), (10, 8178284), (19, 4304360), (20, 4089142), (38, 2152180), (40, 2044571), (76, 1076090), (95, 860872), (152, 538045), (190, 430436), (380, 215218), (760, 107609)]