81723820

素因数分解:

$2^2\times 5^1\times {\mathrm{751}}^1\times {\mathrm{5441}}^1$

素因数の和:6201

約数の個数: 24

約数和(自身を含む): 171880128

約数和(自身を除く): 90156308

約数列:

[1, 2, 4, 5, 10, 20, 751, 1502, 3004, 3755, 5441, 7510, 10882, 15020, 21764, 27205, 54410, 108820, 4086191, 8172382, 16344764, 20430955, 40861910, 81723820]

約数ペア:

[(1, 81723820), (2, 40861910), (4, 20430955), (5, 16344764), (10, 8172382), (20, 4086191), (751, 108820), (1502, 54410), (3004, 27205), (3755, 21764), (5441, 15020), (7510, 10882)]