20840208

素因数分解:

$2^4\times 3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:516

約数の個数: 80

約数和(自身を含む): 57615360

約数和(自身を除く): 36775152

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 43, 46, 48, 69, 86, 92, 129, 138, 172, 184, 258, 276, 344, 368, 439, 516, 552, 688, 878, 989, 1032, 1104, 1317, 1756, 1978, 2064, 2634, 2967, 3512, 3956, 5268, 5934, 7024, 7912, 10097, 10536, 11868, 15824, 18877, 20194, 21072, 23736, 30291, 37754, 40388, 47472, 56631, 60582, 75508, 80776, 113262, 121164, 151016, 161552, 226524, 242328, 302032, 434171, 453048, 484656, 868342, 906096, 1302513, 1736684, 2605026, 3473368, 5210052, 6946736, 10420104, 20840208]

約数ペア:

[(1, 20840208), (2, 10420104), (3, 6946736), (4, 5210052), (6, 3473368), (8, 2605026), (12, 1736684), (16, 1302513), (23, 906096), (24, 868342), (43, 484656), (46, 453048), (48, 434171), (69, 302032), (86, 242328), (92, 226524), (129, 161552), (138, 151016), (172, 121164), (184, 113262), (258, 80776), (276, 75508), (344, 60582), (368, 56631), (439, 47472), (516, 40388), (552, 37754), (688, 30291), (878, 23736), (989, 21072), (1032, 20194), (1104, 18877), (1317, 15824), (1756, 11868), (1978, 10536), (2064, 10097), (2634, 7912), (2967, 7024), (3512, 5934), (3956, 5268)]