20195380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1021}}^1$

素因数の和:1096

約数の個数: 48

約数和(自身を含む): 45327744

約数和(自身を除く): 25132364

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1021, 1978, 2042, 3956, 4084, 4945, 5105, 9890, 10210, 19780, 20420, 23483, 43903, 46966, 87806, 93932, 117415, 175612, 219515, 234830, 439030, 469660, 878060, 1009769, 2019538, 4039076, 5048845, 10097690, 20195380]

約数ペア:

[(1, 20195380), (2, 10097690), (4, 5048845), (5, 4039076), (10, 2019538), (20, 1009769), (23, 878060), (43, 469660), (46, 439030), (86, 234830), (92, 219515), (115, 175612), (172, 117415), (215, 93932), (230, 87806), (430, 46966), (460, 43903), (860, 23483), (989, 20420), (1021, 19780), (1978, 10210), (2042, 9890), (3956, 5105), (4084, 4945)]