21764240

素因数分解:

$2^4\times 5^1\times {\mathrm{272053}}^1$

素因数の和:272066

約数の個数: 20

約数和(自身を含む): 50602044

約数和(自身を除く): 28837804

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272053, 544106, 1088212, 1360265, 2176424, 2720530, 4352848, 5441060, 10882120, 21764240]

約数ペア:

[(1, 21764240), (2, 10882120), (4, 5441060), (5, 4352848), (8, 2720530), (10, 2176424), (16, 1360265), (20, 1088212), (40, 544106), (80, 272053)]