18704560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:410

約数の個数: 80

約数和(自身を含む): 50282496

約数和(自身を除く): 31577936

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 263, 280, 508, 526, 560, 635, 889, 1016, 1052, 1270, 1315, 1778, 1841, 2032, 2104, 2540, 2630, 3556, 3682, 4208, 4445, 5080, 5260, 7112, 7364, 8890, 9205, 10160, 10520, 14224, 14728, 17780, 18410, 21040, 29456, 33401, 35560, 36820, 66802, 71120, 73640, 133604, 147280, 167005, 233807, 267208, 334010, 467614, 534416, 668020, 935228, 1169035, 1336040, 1870456, 2338070, 2672080, 3740912, 4676140, 9352280, 18704560]

約数ペア:

[(1, 18704560), (2, 9352280), (4, 4676140), (5, 3740912), (7, 2672080), (8, 2338070), (10, 1870456), (14, 1336040), (16, 1169035), (20, 935228), (28, 668020), (35, 534416), (40, 467614), (56, 334010), (70, 267208), (80, 233807), (112, 167005), (127, 147280), (140, 133604), (254, 73640), (263, 71120), (280, 66802), (508, 36820), (526, 35560), (560, 33401), (635, 29456), (889, 21040), (1016, 18410), (1052, 17780), (1270, 14728), (1315, 14224), (1778, 10520), (1841, 10160), (2032, 9205), (2104, 8890), (2540, 7364), (2630, 7112), (3556, 5260), (3682, 5080), (4208, 4445)]