20118784

素因数分解:

$2^8\times 7^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 46766720

約数和(自身を除く): 26647936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 103, 109, 112, 128, 206, 218, 224, 256, 412, 436, 448, 721, 763, 824, 872, 896, 1442, 1526, 1648, 1744, 1792, 2884, 3052, 3296, 3488, 5768, 6104, 6592, 6976, 11227, 11536, 12208, 13184, 13952, 22454, 23072, 24416, 26368, 27904, 44908, 46144, 48832, 78589, 89816, 92288, 97664, 157178, 179632, 184576, 195328, 314356, 359264, 628712, 718528, 1257424, 1437056, 2514848, 2874112, 5029696, 10059392, 20118784]

約数ペア:

[(1, 20118784), (2, 10059392), (4, 5029696), (7, 2874112), (8, 2514848), (14, 1437056), (16, 1257424), (28, 718528), (32, 628712), (56, 359264), (64, 314356), (103, 195328), (109, 184576), (112, 179632), (128, 157178), (206, 97664), (218, 92288), (224, 89816), (256, 78589), (412, 48832), (436, 46144), (448, 44908), (721, 27904), (763, 26368), (824, 24416), (872, 23072), (896, 22454), (1442, 13952), (1526, 13184), (1648, 12208), (1744, 11536), (1792, 11227), (2884, 6976), (3052, 6592), (3296, 6104), (3488, 5768)]