21777110

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19979}}^1$

素因数の和:20095

約数の個数: 16

約数和(自身を含む): 39560400

約数和(自身を除く): 17783290

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19979, 39958, 99895, 199790, 2177711, 4355422, 10888555, 21777110]

約数ペア:

[(1, 21777110), (2, 10888555), (5, 4355422), (10, 2177711), (109, 199790), (218, 99895), (545, 39958), (1090, 19979)]