20913265

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1\times {\mathrm{461}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 25857216

約数和(自身を除く): 4943951

約数列:

[1, 5, 43, 211, 215, 461, 1055, 2305, 9073, 19823, 45365, 97271, 99115, 486355, 4182653, 20913265]

約数ペア:

[(1, 20913265), (5, 4182653), (43, 486355), (211, 99115), (215, 97271), (461, 45365), (1055, 19823), (2305, 9073)]