21802755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6577}}^1$

素因数の和:6615

約数の個数: 32

約数和(自身を含む): 39783744

約数和(自身を除く): 17980989

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 6577, 19731, 32885, 85501, 98655, 111809, 256503, 335427, 427505, 559045, 1282515, 1453517, 1677135, 4360551, 7267585, 21802755]

約数ペア:

[(1, 21802755), (3, 7267585), (5, 4360551), (13, 1677135), (15, 1453517), (17, 1282515), (39, 559045), (51, 427505), (65, 335427), (85, 256503), (195, 111809), (221, 98655), (255, 85501), (663, 32885), (1105, 19731), (3315, 6577)]