208992020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{549979}}^1$

素因数の和:550007

約数の個数: 24

約数和(自身を含む): 461983200

約数和(自身を除く): 252991180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 549979, 1099958, 2199916, 2749895, 5499790, 10449601, 10999580, 20899202, 41798404, 52248005, 104496010, 208992020]

約数ペア:

[(1, 208992020), (2, 104496010), (4, 52248005), (5, 41798404), (10, 20899202), (19, 10999580), (20, 10449601), (38, 5499790), (76, 2749895), (95, 2199916), (190, 1099958), (380, 549979)]