20193468760

素因数分解:

$2^3\times 5^1\times {\mathrm{39499}}^1\times {\mathrm{12781}}^1$

素因数の和:52291

約数の個数: 32

約数和(自身を含む): 45440010000

約数和(自身を除く): 25246541240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 12781, 25562, 39499, 51124, 63905, 78998, 102248, 127810, 157996, 197495, 255620, 315992, 394990, 511240, 789980, 1579960, 504836719, 1009673438, 2019346876, 2524183595, 4038693752, 5048367190, 10096734380, 20193468760]

約数ペア:

[(1, 20193468760), (2, 10096734380), (4, 5048367190), (5, 4038693752), (8, 2524183595), (10, 2019346876), (20, 1009673438), (40, 504836719), (12781, 1579960), (25562, 789980), (39499, 511240), (51124, 394990), (63905, 315992), (78998, 255620), (102248, 197495), (127810, 157996)]