17991988

素因数分解:

$2^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{3229}}^1$

素因数の和:3439

約数の個数: 24

約数和(自身を含む): 36176000

約数和(自身を除く): 18184012

約数列:

[1, 2, 4, 7, 14, 28, 199, 398, 796, 1393, 2786, 3229, 5572, 6458, 12916, 22603, 45206, 90412, 642571, 1285142, 2570284, 4497997, 8995994, 17991988]

約数ペア:

[(1, 17991988), (2, 8995994), (4, 4497997), (7, 2570284), (14, 1285142), (28, 642571), (199, 90412), (398, 45206), (796, 22603), (1393, 12916), (2786, 6458), (3229, 5572)]