20199892420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2081}}^1\times {\mathrm{11287}}^1$

素因数の和:13420

約数の個数: 48

約数和(自身を含む): 43430986368

約数和(自身を除く): 23231093948

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 2081, 4162, 8324, 10405, 11287, 20810, 22574, 41620, 45148, 56435, 89483, 112870, 178966, 225740, 357932, 447415, 485341, 894830, 970682, 1789660, 1941364, 2426705, 4853410, 9706820, 23488247, 46976494, 93952988, 117441235, 234882470, 469764940, 1009994621, 2019989242, 4039978484, 5049973105, 10099946210, 20199892420]

約数ペア:

[(1, 20199892420), (2, 10099946210), (4, 5049973105), (5, 4039978484), (10, 2019989242), (20, 1009994621), (43, 469764940), (86, 234882470), (172, 117441235), (215, 93952988), (430, 46976494), (860, 23488247), (2081, 9706820), (4162, 4853410), (8324, 2426705), (10405, 1941364), (11287, 1789660), (20810, 970682), (22574, 894830), (41620, 485341), (45148, 447415), (56435, 357932), (89483, 225740), (112870, 178966)]