20402578340

素因数分解:

$2^2\times 5^1\times {\mathrm{797}}^1\times {\mathrm{1279961}}^1$

素因数の和:1280767

約数の個数: 24

約数和(自身を含む): 42899206392

約数和(自身を除く): 22496628052

約数列:

[1, 2, 4, 5, 10, 20, 797, 1594, 3188, 3985, 7970, 15940, 1279961, 2559922, 5119844, 6399805, 12799610, 25599220, 1020128917, 2040257834, 4080515668, 5100644585, 10201289170, 20402578340]

約数ペア:

[(1, 20402578340), (2, 10201289170), (4, 5100644585), (5, 4080515668), (10, 2040257834), (20, 1020128917), (797, 25599220), (1594, 12799610), (3188, 6399805), (3985, 5119844), (7970, 2559922), (15940, 1279961)]