20857088

素因数分解:

$2^8\times 7^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 48467328

約数和(自身を除く): 27610240

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 103, 112, 113, 128, 206, 224, 226, 256, 412, 448, 452, 721, 791, 824, 896, 904, 1442, 1582, 1648, 1792, 1808, 2884, 3164, 3296, 3616, 5768, 6328, 6592, 7232, 11536, 11639, 12656, 13184, 14464, 23072, 23278, 25312, 26368, 28928, 46144, 46556, 50624, 81473, 92288, 93112, 101248, 162946, 184576, 186224, 202496, 325892, 372448, 651784, 744896, 1303568, 1489792, 2607136, 2979584, 5214272, 10428544, 20857088]

約数ペア:

[(1, 20857088), (2, 10428544), (4, 5214272), (7, 2979584), (8, 2607136), (14, 1489792), (16, 1303568), (28, 744896), (32, 651784), (56, 372448), (64, 325892), (103, 202496), (112, 186224), (113, 184576), (128, 162946), (206, 101248), (224, 93112), (226, 92288), (256, 81473), (412, 50624), (448, 46556), (452, 46144), (721, 28928), (791, 26368), (824, 25312), (896, 23278), (904, 23072), (1442, 14464), (1582, 13184), (1648, 12656), (1792, 11639), (1808, 11536), (2884, 7232), (3164, 6592), (3296, 6328), (3616, 5768)]