20285216

素因数分解:

$2^5\times 7^2\times {\mathrm{17}}^1\times {\mathrm{761}}^1$

素因数の和:802

約数の個数: 72

約数和(自身を含む): 49254156

約数和(自身を除く): 28968940

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 49, 56, 68, 98, 112, 119, 136, 196, 224, 238, 272, 392, 476, 544, 761, 784, 833, 952, 1522, 1568, 1666, 1904, 3044, 3332, 3808, 5327, 6088, 6664, 10654, 12176, 12937, 13328, 21308, 24352, 25874, 26656, 37289, 42616, 51748, 74578, 85232, 90559, 103496, 149156, 170464, 181118, 206992, 298312, 362236, 413984, 596624, 633913, 724472, 1193248, 1267826, 1448944, 2535652, 2897888, 5071304, 10142608, 20285216]

約数ペア:

[(1, 20285216), (2, 10142608), (4, 5071304), (7, 2897888), (8, 2535652), (14, 1448944), (16, 1267826), (17, 1193248), (28, 724472), (32, 633913), (34, 596624), (49, 413984), (56, 362236), (68, 298312), (98, 206992), (112, 181118), (119, 170464), (136, 149156), (196, 103496), (224, 90559), (238, 85232), (272, 74578), (392, 51748), (476, 42616), (544, 37289), (761, 26656), (784, 25874), (833, 24352), (952, 21308), (1522, 13328), (1568, 12937), (1666, 12176), (1904, 10654), (3044, 6664), (3332, 6088), (3808, 5327)]