18991640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{24989}}^1$

素因数の和:25019

約数の個数: 32

約数和(自身を含む): 44982000

約数和(自身を除く): 25990360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 24989, 49978, 99956, 124945, 199912, 249890, 474791, 499780, 949582, 999560, 1899164, 2373955, 3798328, 4747910, 9495820, 18991640]

約数ペア:

[(1, 18991640), (2, 9495820), (4, 4747910), (5, 3798328), (8, 2373955), (10, 1899164), (19, 999560), (20, 949582), (38, 499780), (40, 474791), (76, 249890), (95, 199912), (152, 124945), (190, 99956), (380, 49978), (760, 24989)]