81638600

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5167}}^1$

素因数の和:5262

約数の個数: 48

約数和(自身を含む): 192249600

約数和(自身を除く): 110611000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1975, 3160, 3950, 5167, 7900, 10334, 15800, 20668, 25835, 41336, 51670, 103340, 129175, 206680, 258350, 408193, 516700, 816386, 1033400, 1632772, 2040965, 3265544, 4081930, 8163860, 10204825, 16327720, 20409650, 40819300, 81638600]

約数ペア:

[(1, 81638600), (2, 40819300), (4, 20409650), (5, 16327720), (8, 10204825), (10, 8163860), (20, 4081930), (25, 3265544), (40, 2040965), (50, 1632772), (79, 1033400), (100, 816386), (158, 516700), (200, 408193), (316, 258350), (395, 206680), (632, 129175), (790, 103340), (1580, 51670), (1975, 41336), (3160, 25835), (3950, 20668), (5167, 15800), (7900, 10334)]