54840020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{30809}}^1$

素因数の和:30907

約数の個数: 24

約数和(自身を含む): 116461800

約数和(自身を除く): 61621780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 30809, 61618, 123236, 154045, 308090, 616180, 2742001, 5484002, 10968004, 13710005, 27420010, 54840020]

約数ペア:

[(1, 54840020), (2, 27420010), (4, 13710005), (5, 10968004), (10, 5484002), (20, 2742001), (89, 616180), (178, 308090), (356, 154045), (445, 123236), (890, 61618), (1780, 30809)]