21919035

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2067

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 16096965

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 1999, 2193, 3655, 5997, 9995, 10965, 29985, 33983, 85957, 101949, 169915, 257871, 429785, 509745, 1289355, 1461269, 4383807, 7306345, 21919035]

約数ペア:

[(1, 21919035), (3, 7306345), (5, 4383807), (15, 1461269), (17, 1289355), (43, 509745), (51, 429785), (85, 257871), (129, 169915), (215, 101949), (255, 85957), (645, 33983), (731, 29985), (1999, 10965), (2193, 9995), (3655, 5997)]