201020715

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{638161}}^1$

素因数の和:638179

約数の個数: 24

約数和(自身を含む): 398213088

約数和(自身を除く): 197192373

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 638161, 1914483, 3190805, 4467127, 5743449, 9572415, 13401381, 22335635, 28717245, 40204143, 67006905, 201020715]

約数ペア:

[(1, 201020715), (3, 67006905), (5, 40204143), (7, 28717245), (9, 22335635), (15, 13401381), (21, 9572415), (35, 5743449), (45, 4467127), (63, 3190805), (105, 1914483), (315, 638161)]