20268080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2129}}^1$

素因数の和:2166

約数の個数: 80

約数和(自身を含む): 57049920

約数和(自身を除く): 36781840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2129, 2380, 4258, 4760, 8516, 9520, 10645, 14903, 17032, 21290, 29806, 34064, 36193, 42580, 59612, 72386, 74515, 85160, 119224, 144772, 149030, 170320, 180965, 238448, 253351, 289544, 298060, 361930, 506702, 579088, 596120, 723860, 1013404, 1192240, 1266755, 1447720, 2026808, 2533510, 2895440, 4053616, 5067020, 10134040, 20268080]

約数ペア:

[(1, 20268080), (2, 10134040), (4, 5067020), (5, 4053616), (7, 2895440), (8, 2533510), (10, 2026808), (14, 1447720), (16, 1266755), (17, 1192240), (20, 1013404), (28, 723860), (34, 596120), (35, 579088), (40, 506702), (56, 361930), (68, 298060), (70, 289544), (80, 253351), (85, 238448), (112, 180965), (119, 170320), (136, 149030), (140, 144772), (170, 119224), (238, 85160), (272, 74515), (280, 72386), (340, 59612), (476, 42580), (560, 36193), (595, 34064), (680, 29806), (952, 21290), (1190, 17032), (1360, 14903), (1904, 10645), (2129, 9520), (2380, 8516), (4258, 4760)]