1270640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{2269}}^1$

素因数の和:2289

約数の個数: 40

約数和(自身を含む): 3377760

約数和(自身を除く): 2107120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 2269, 4538, 9076, 11345, 15883, 18152, 22690, 31766, 36304, 45380, 63532, 79415, 90760, 127064, 158830, 181520, 254128, 317660, 635320, 1270640]

約数ペア:

[(1, 1270640), (2, 635320), (4, 317660), (5, 254128), (7, 181520), (8, 158830), (10, 127064), (14, 90760), (16, 79415), (20, 63532), (28, 45380), (35, 36304), (40, 31766), (56, 22690), (70, 18152), (80, 15883), (112, 11345), (140, 9076), (280, 4538), (560, 2269)]