19084820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 41610240

約数和(自身を除く): 22525420

約数列:

[1, 2, 4, 5, 10, 20, 47, 79, 94, 158, 188, 235, 257, 316, 395, 470, 514, 790, 940, 1028, 1285, 1580, 2570, 3713, 5140, 7426, 12079, 14852, 18565, 20303, 24158, 37130, 40606, 48316, 60395, 74260, 81212, 101515, 120790, 203030, 241580, 406060, 954241, 1908482, 3816964, 4771205, 9542410, 19084820]

約数ペア:

[(1, 19084820), (2, 9542410), (4, 4771205), (5, 3816964), (10, 1908482), (20, 954241), (47, 406060), (79, 241580), (94, 203030), (158, 120790), (188, 101515), (235, 81212), (257, 74260), (316, 60395), (395, 48316), (470, 40606), (514, 37130), (790, 24158), (940, 20303), (1028, 18565), (1285, 14852), (1580, 12079), (2570, 7426), (3713, 5140)]