20490165

素因数分解:

$3^4\times 5^1\times {\mathrm{50593}}^1$

素因数の和:50610

約数の個数: 20

約数和(自身を含む): 36731244

約数和(自身を除く): 16241079

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50593, 151779, 252965, 455337, 758895, 1366011, 2276685, 4098033, 6830055, 20490165]

約数ペア:

[(1, 20490165), (3, 6830055), (5, 4098033), (9, 2276685), (15, 1366011), (27, 758895), (45, 455337), (81, 252965), (135, 151779), (405, 50593)]