21089265

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{433}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 14908431

約数列:

[1, 3, 5, 15, 17, 51, 85, 191, 255, 433, 573, 955, 1299, 2165, 2865, 3247, 6495, 7361, 9741, 16235, 22083, 36805, 48705, 82703, 110415, 248109, 413515, 1240545, 1405951, 4217853, 7029755, 21089265]

約数ペア:

[(1, 21089265), (3, 7029755), (5, 4217853), (15, 1405951), (17, 1240545), (51, 413515), (85, 248109), (191, 110415), (255, 82703), (433, 48705), (573, 36805), (955, 22083), (1299, 16235), (2165, 9741), (2865, 7361), (3247, 6495)]