18981232

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{587}}^1$

素因数の和:685

約数の個数: 40

約数和(自身を含む): 38497536

約数和(自身を除く): 19516304

約数列:

[1, 2, 4, 8, 16, 43, 47, 86, 94, 172, 188, 344, 376, 587, 688, 752, 1174, 2021, 2348, 4042, 4696, 8084, 9392, 16168, 25241, 27589, 32336, 50482, 55178, 100964, 110356, 201928, 220712, 403856, 441424, 1186327, 2372654, 4745308, 9490616, 18981232]

約数ペア:

[(1, 18981232), (2, 9490616), (4, 4745308), (8, 2372654), (16, 1186327), (43, 441424), (47, 403856), (86, 220712), (94, 201928), (172, 110356), (188, 100964), (344, 55178), (376, 50482), (587, 32336), (688, 27589), (752, 25241), (1174, 16168), (2021, 9392), (2348, 8084), (4042, 4696)]