1688179780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{169837}}^1$

素因数の和:169924

約数の個数: 48

約数和(自身を含む): 4108720896

約数和(自身を除く): 2420541116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 169837, 339674, 679348, 849185, 1188859, 1698370, 2377718, 3396740, 4755436, 5944295, 11888590, 12058427, 23777180, 24116854, 48233708, 60292135, 84408989, 120584270, 168817978, 241168540, 337635956, 422044945, 844089890, 1688179780]

約数ペア:

[(1, 1688179780), (2, 844089890), (4, 422044945), (5, 337635956), (7, 241168540), (10, 168817978), (14, 120584270), (20, 84408989), (28, 60292135), (35, 48233708), (70, 24116854), (71, 23777180), (140, 12058427), (142, 11888590), (284, 5944295), (355, 4755436), (497, 3396740), (710, 2377718), (994, 1698370), (1420, 1188859), (1988, 849185), (2485, 679348), (4970, 339674), (9940, 169837)]