18888280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 46332000

約数和(自身を除く): 27443720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 76, 95, 116, 145, 152, 190, 232, 290, 380, 551, 580, 760, 857, 1102, 1160, 1714, 2204, 2755, 3428, 4285, 4408, 5510, 6856, 8570, 11020, 16283, 17140, 22040, 24853, 32566, 34280, 49706, 65132, 81415, 99412, 124265, 130264, 162830, 198824, 248530, 325660, 472207, 497060, 651320, 944414, 994120, 1888828, 2361035, 3777656, 4722070, 9444140, 18888280]

約数ペア:

[(1, 18888280), (2, 9444140), (4, 4722070), (5, 3777656), (8, 2361035), (10, 1888828), (19, 994120), (20, 944414), (29, 651320), (38, 497060), (40, 472207), (58, 325660), (76, 248530), (95, 198824), (116, 162830), (145, 130264), (152, 124265), (190, 99412), (232, 81415), (290, 65132), (380, 49706), (551, 34280), (580, 32566), (760, 24853), (857, 22040), (1102, 17140), (1160, 16283), (1714, 11020), (2204, 8570), (2755, 6856), (3428, 5510), (4285, 4408)]