19968156784

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{853}}^1\times {\mathrm{9319}}^1$

素因数の和:10337

約数の個数: 40

約数和(自身を含む): 38984553440

約数和(自身を除く): 19016396656

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 853, 1256, 1706, 2512, 3412, 6824, 9319, 13648, 18638, 37276, 74552, 133921, 149104, 267842, 535684, 1071368, 1463083, 2142736, 2926166, 5852332, 7949107, 11704664, 15898214, 23409328, 31796428, 63592856, 127185712, 1248009799, 2496019598, 4992039196, 9984078392, 19968156784]

約数ペア:

[(1, 19968156784), (2, 9984078392), (4, 4992039196), (8, 2496019598), (16, 1248009799), (157, 127185712), (314, 63592856), (628, 31796428), (853, 23409328), (1256, 15898214), (1706, 11704664), (2512, 7949107), (3412, 5852332), (6824, 2926166), (9319, 2142736), (13648, 1463083), (18638, 1071368), (37276, 535684), (74552, 267842), (133921, 149104)]