390815997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47947}}^1$

素因数の和:47993

約数の個数: 32

約数和(自身を含む): 644421120

約数和(自身を除く): 253605123

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 143, 209, 247, 429, 627, 741, 2717, 8151, 47947, 143841, 527417, 623311, 910993, 1582251, 1869933, 2732979, 6856421, 10020923, 11842909, 20569263, 30062769, 35528727, 130271999, 390815997]

約数ペア:

[(1, 390815997), (3, 130271999), (11, 35528727), (13, 30062769), (19, 20569263), (33, 11842909), (39, 10020923), (57, 6856421), (143, 2732979), (209, 1869933), (247, 1582251), (429, 910993), (627, 623311), (741, 527417), (2717, 143841), (8151, 47947)]