788784860

素因数分解:

$2^2\times 5^1\times {\mathrm{3989}}^1\times {\mathrm{9887}}^1$

素因数の和:13885

約数の個数: 24

約数和(自身を含む): 1657031040

約数和(自身を除く): 868246180

約数列:

[1, 2, 4, 5, 10, 20, 3989, 7978, 9887, 15956, 19774, 19945, 39548, 39890, 49435, 79780, 98870, 197740, 39439243, 78878486, 157756972, 197196215, 394392430, 788784860]

約数ペア:

[(1, 788784860), (2, 394392430), (4, 197196215), (5, 157756972), (10, 78878486), (20, 39439243), (3989, 197740), (7978, 98870), (9887, 79780), (15956, 49435), (19774, 39890), (19945, 39548)]