80456890

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{90401}}^1$

素因数の和:90497

約数の個数: 16

約数和(自身を含む): 146451240

約数和(自身を除く): 65994350

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 90401, 180802, 452005, 904010, 8045689, 16091378, 40228445, 80456890]

約数ペア:

[(1, 80456890), (2, 40228445), (5, 16091378), (10, 8045689), (89, 904010), (178, 452005), (445, 180802), (890, 90401)]