778899191

素因数分解:

$7^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1\times {\mathrm{1381}}^1$

素因数の和:1994

約数の個数: 16

約数和(自身を含む): 897526080

約数和(自身を除く): 118626889

約数列:

[1, 7, 197, 409, 1379, 1381, 2863, 9667, 80573, 272057, 564011, 564829, 1904399, 3953803, 111271313, 778899191]

約数ペア:

[(1, 778899191), (7, 111271313), (197, 3953803), (409, 1904399), (1379, 564829), (1381, 564011), (2863, 272057), (9667, 80573)]