74990020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2719}}^1$

素因数の和:2932

約数の個数: 48

約数和(自身を含む): 180956160

約数和(自身を除く): 105966140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1379, 1970, 2719, 2758, 3940, 5438, 5516, 6895, 10876, 13595, 13790, 19033, 27190, 27580, 38066, 54380, 76132, 95165, 190330, 380660, 535643, 1071286, 2142572, 2678215, 3749501, 5356430, 7499002, 10712860, 14998004, 18747505, 37495010, 74990020]

約数ペア:

[(1, 74990020), (2, 37495010), (4, 18747505), (5, 14998004), (7, 10712860), (10, 7499002), (14, 5356430), (20, 3749501), (28, 2678215), (35, 2142572), (70, 1071286), (140, 535643), (197, 380660), (394, 190330), (788, 95165), (985, 76132), (1379, 54380), (1970, 38066), (2719, 27580), (2758, 27190), (3940, 19033), (5438, 13790), (5516, 13595), (6895, 10876)]