19977936

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{241}}^1$

素因数の和:420

約数の個数: 80

約数和(自身を含む): 56895168

約数和(自身を除く): 36917232

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 157, 176, 241, 264, 314, 471, 482, 528, 628, 723, 942, 964, 1256, 1446, 1727, 1884, 1928, 2512, 2651, 2892, 3454, 3768, 3856, 5181, 5302, 5784, 6908, 7536, 7953, 10362, 10604, 11568, 13816, 15906, 20724, 21208, 27632, 31812, 37837, 41448, 42416, 63624, 75674, 82896, 113511, 127248, 151348, 227022, 302696, 416207, 454044, 605392, 832414, 908088, 1248621, 1664828, 1816176, 2497242, 3329656, 4994484, 6659312, 9988968, 19977936]

約数ペア:

[(1, 19977936), (2, 9988968), (3, 6659312), (4, 4994484), (6, 3329656), (8, 2497242), (11, 1816176), (12, 1664828), (16, 1248621), (22, 908088), (24, 832414), (33, 605392), (44, 454044), (48, 416207), (66, 302696), (88, 227022), (132, 151348), (157, 127248), (176, 113511), (241, 82896), (264, 75674), (314, 63624), (471, 42416), (482, 41448), (528, 37837), (628, 31812), (723, 27632), (942, 21208), (964, 20724), (1256, 15906), (1446, 13816), (1727, 11568), (1884, 10604), (1928, 10362), (2512, 7953), (2651, 7536), (2892, 6908), (3454, 5784), (3768, 5302), (3856, 5181)]