81147540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1352459}}^1$

素因数の和:1352471

約数の個数: 24

約数和(自身を含む): 227213280

約数和(自身を除く): 146065740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1352459, 2704918, 4057377, 5409836, 6762295, 8114754, 13524590, 16229508, 20286885, 27049180, 40573770, 81147540]

約数ペア:

[(1, 81147540), (2, 40573770), (3, 27049180), (4, 20286885), (5, 16229508), (6, 13524590), (10, 8114754), (12, 6762295), (15, 5409836), (20, 4057377), (30, 2704918), (60, 1352459)]