2640640

素因数分解:

$2^8\times 5^1\times {\mathrm{2063}}^1$

素因数の和:2084

約数の個数: 36

約数和(自身を含む): 6328224

約数和(自身を除く): 3687584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 2063, 4126, 8252, 10315, 16504, 20630, 33008, 41260, 66016, 82520, 132032, 165040, 264064, 330080, 528128, 660160, 1320320, 2640640]

約数ペア:

[(1, 2640640), (2, 1320320), (4, 660160), (5, 528128), (8, 330080), (10, 264064), (16, 165040), (20, 132032), (32, 82520), (40, 66016), (64, 41260), (80, 33008), (128, 20630), (160, 16504), (256, 10315), (320, 8252), (640, 4126), (1280, 2063)]