39193820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{227}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 84460320

約数和(自身を除く): 45266500

約数列:

[1, 2, 4, 5, 10, 20, 89, 97, 178, 194, 227, 356, 388, 445, 454, 485, 890, 908, 970, 1135, 1780, 1940, 2270, 4540, 8633, 17266, 20203, 22019, 34532, 40406, 43165, 44038, 80812, 86330, 88076, 101015, 110095, 172660, 202030, 220190, 404060, 440380, 1959691, 3919382, 7838764, 9798455, 19596910, 39193820]

約数ペア:

[(1, 39193820), (2, 19596910), (4, 9798455), (5, 7838764), (10, 3919382), (20, 1959691), (89, 440380), (97, 404060), (178, 220190), (194, 202030), (227, 172660), (356, 110095), (388, 101015), (445, 88076), (454, 86330), (485, 80812), (890, 44038), (908, 43165), (970, 40406), (1135, 34532), (1780, 22019), (1940, 20203), (2270, 17266), (4540, 8633)]