20920275

素因数分解:

$3^4\times 5^2\times {\mathrm{10331}}^1$

素因数の和:10353

約数の個数: 30

約数和(自身を含む): 38755332

約数和(自身を除く): 17835057

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10331, 30993, 51655, 92979, 154965, 258275, 278937, 464895, 774825, 836811, 1394685, 2324475, 4184055, 6973425, 20920275]

約数ペア:

[(1, 20920275), (3, 6973425), (5, 4184055), (9, 2324475), (15, 1394685), (25, 836811), (27, 774825), (45, 464895), (75, 278937), (81, 258275), (135, 154965), (225, 92979), (405, 51655), (675, 30993), (2025, 10331)]