399393794

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1\times {\mathrm{5477}}^1$

素因数の和:5618

約数の個数: 24

約数和(自身を含む): 638658108

約数和(自身を除く): 239264314

約数列:

[1, 2, 19, 38, 101, 202, 361, 722, 1919, 3838, 5477, 10954, 36461, 72922, 104063, 208126, 553177, 1106354, 1977197, 3954394, 10510363, 21020726, 199696897, 399393794]

約数ペア:

[(1, 399393794), (2, 199696897), (19, 21020726), (38, 10510363), (101, 3954394), (202, 1977197), (361, 1106354), (722, 553177), (1919, 208126), (3838, 104063), (5477, 72922), (10954, 36461)]