21286664

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4271}}^1$

素因数の和:4373

約数の個数: 32

約数和(自身を含む): 46137600

約数和(自身を除く): 24850936

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4271, 4984, 8542, 17084, 29897, 34168, 59794, 119588, 239176, 380119, 760238, 1520476, 2660833, 3040952, 5321666, 10643332, 21286664]

約数ペア:

[(1, 21286664), (2, 10643332), (4, 5321666), (7, 3040952), (8, 2660833), (14, 1520476), (28, 760238), (56, 380119), (89, 239176), (178, 119588), (356, 59794), (623, 34168), (712, 29897), (1246, 17084), (2492, 8542), (4271, 4984)]