19973480

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1777}}^1$

素因数の和:2069

約数の個数: 32

約数和(自身を含む): 45125640

約数和(自身を除く): 25152160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 1777, 2248, 2810, 3554, 5620, 7108, 8885, 11240, 14216, 17770, 35540, 71080, 499337, 998674, 1997348, 2496685, 3994696, 4993370, 9986740, 19973480]

約数ペア:

[(1, 19973480), (2, 9986740), (4, 4993370), (5, 3994696), (8, 2496685), (10, 1997348), (20, 998674), (40, 499337), (281, 71080), (562, 35540), (1124, 17770), (1405, 14216), (1777, 11240), (2248, 8885), (2810, 7108), (3554, 5620)]