80726660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2927}}^1$

素因数の和:3140

約数の個数: 48

約数和(自身を含む): 194793984

約数和(自身を除く): 114067324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1379, 1970, 2758, 2927, 3940, 5516, 5854, 6895, 11708, 13790, 14635, 20489, 27580, 29270, 40978, 58540, 81956, 102445, 204890, 409780, 576619, 1153238, 2306476, 2883095, 4036333, 5766190, 8072666, 11532380, 16145332, 20181665, 40363330, 80726660]

約数ペア:

[(1, 80726660), (2, 40363330), (4, 20181665), (5, 16145332), (7, 11532380), (10, 8072666), (14, 5766190), (20, 4036333), (28, 2883095), (35, 2306476), (70, 1153238), (140, 576619), (197, 409780), (394, 204890), (788, 102445), (985, 81956), (1379, 58540), (1970, 40978), (2758, 29270), (2927, 27580), (3940, 20489), (5516, 14635), (5854, 13790), (6895, 11708)]