18705967

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{823}}^1$

素因数の和:1038

約数の個数: 16

約数和(自身を含む): 22781952

約数和(自身を除く): 4075985

約数列:

[1, 7, 17, 119, 191, 823, 1337, 3247, 5761, 13991, 22729, 97937, 157193, 1100351, 2672281, 18705967]

約数ペア:

[(1, 18705967), (7, 2672281), (17, 1100351), (119, 157193), (191, 97937), (823, 22729), (1337, 13991), (3247, 5761)]