1900990091

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61261}}^1$

素因数の和:61323

約数の個数: 32

約数和(自身を含む): 2634756096

約数和(自身を除く): 733766005

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 1001, 2387, 2821, 4433, 31031, 61261, 428827, 673871, 796393, 1899091, 4717097, 5574751, 8760323, 13293637, 20890001, 24688183, 61322261, 146230007, 172817281, 271570013, 1900990091]

約数ペア:

[(1, 1900990091), (7, 271570013), (11, 172817281), (13, 146230007), (31, 61322261), (77, 24688183), (91, 20890001), (143, 13293637), (217, 8760323), (341, 5574751), (403, 4717097), (1001, 1899091), (2387, 796393), (2821, 673871), (4433, 428827), (31031, 61261)]