21355664

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1709}}^1$

素因数の和:1799

約数の個数: 40

約数和(自身を含む): 45800640

約数和(自身を除く): 24444976

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 1709, 3124, 3418, 6248, 6836, 12496, 13672, 18799, 27344, 37598, 75196, 121339, 150392, 242678, 300784, 485356, 970712, 1334729, 1941424, 2669458, 5338916, 10677832, 21355664]

約数ペア:

[(1, 21355664), (2, 10677832), (4, 5338916), (8, 2669458), (11, 1941424), (16, 1334729), (22, 970712), (44, 485356), (71, 300784), (88, 242678), (142, 150392), (176, 121339), (284, 75196), (568, 37598), (781, 27344), (1136, 18799), (1562, 13672), (1709, 12496), (3124, 6836), (3418, 6248)]