408978830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{15809}}^1$

素因数の和:16028

約数の個数: 32

約数和(自身を含む): 796824000

約数和(自身を除く): 387845170

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 995, 1990, 2587, 5174, 12935, 15809, 25870, 31618, 79045, 158090, 205517, 411034, 1027585, 2055170, 3145991, 6291982, 15729955, 31459910, 40897883, 81795766, 204489415, 408978830]

約数ペア:

[(1, 408978830), (2, 204489415), (5, 81795766), (10, 40897883), (13, 31459910), (26, 15729955), (65, 6291982), (130, 3145991), (199, 2055170), (398, 1027585), (995, 411034), (1990, 205517), (2587, 158090), (5174, 79045), (12935, 31618), (15809, 25870)]