21777160

素因数分解:

$2^3\times 5^1\times {\mathrm{544429}}^1$

素因数の和:544440

約数の個数: 16

約数和(自身を含む): 48998700

約数和(自身を除く): 27221540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 544429, 1088858, 2177716, 2722145, 4355432, 5444290, 10888580, 21777160]

約数ペア:

[(1, 21777160), (2, 10888580), (4, 5444290), (5, 4355432), (8, 2722145), (10, 2177716), (20, 1088858), (40, 544429)]