20549778040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{993703}}^1$

素因数の和:993772

約数の個数: 64

約数和(自身を含む): 51513615360

約数和(自身を除く): 30963837320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 1034, 1880, 2068, 2585, 4136, 5170, 10340, 20680, 993703, 1987406, 3974812, 4968515, 7949624, 9937030, 10930733, 19874060, 21861466, 39748120, 43722932, 46704041, 54653665, 87445864, 93408082, 109307330, 186816164, 218614660, 233520205, 373632328, 437229320, 467040410, 513744451, 934080820, 1027488902, 1868161640, 2054977804, 2568722255, 4109955608, 5137444510, 10274889020, 20549778040]

約数ペア:

[(1, 20549778040), (2, 10274889020), (4, 5137444510), (5, 4109955608), (8, 2568722255), (10, 2054977804), (11, 1868161640), (20, 1027488902), (22, 934080820), (40, 513744451), (44, 467040410), (47, 437229320), (55, 373632328), (88, 233520205), (94, 218614660), (110, 186816164), (188, 109307330), (220, 93408082), (235, 87445864), (376, 54653665), (440, 46704041), (470, 43722932), (517, 39748120), (940, 21861466), (1034, 19874060), (1880, 10930733), (2068, 9937030), (2585, 7949624), (4136, 4968515), (5170, 3974812), (10340, 1987406), (20680, 993703)]