21319634

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80149}}^1$

素因数の和:80177

約数の個数: 16

約数和(自身を含む): 38472000

約数和(自身を除く): 17152366

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80149, 160298, 561043, 1122086, 1522831, 3045662, 10659817, 21319634]

約数ペア:

[(1, 21319634), (2, 10659817), (7, 3045662), (14, 1522831), (19, 1122086), (38, 561043), (133, 160298), (266, 80149)]