20793145880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39986819}}^1$

素因数の和:39986843

約数の個数: 32

約数和(自身を含む): 50383393200

約数和(自身を除く): 29590247320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39986819, 79973638, 159947276, 199934095, 319894552, 399868190, 519828647, 799736380, 1039657294, 1599472760, 2079314588, 2599143235, 4158629176, 5198286470, 10396572940, 20793145880]

約数ペア:

[(1, 20793145880), (2, 10396572940), (4, 5198286470), (5, 4158629176), (8, 2599143235), (10, 2079314588), (13, 1599472760), (20, 1039657294), (26, 799736380), (40, 519828647), (52, 399868190), (65, 319894552), (104, 199934095), (130, 159947276), (260, 79973638), (520, 39986819)]