18640640

素因数分解:

$2^8\times 5^1\times {\mathrm{14563}}^1$

素因数の和:14584

約数の個数: 36

約数和(自身を含む): 44653224

約数和(自身を除く): 26012584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 14563, 29126, 58252, 72815, 116504, 145630, 233008, 291260, 466016, 582520, 932032, 1165040, 1864064, 2330080, 3728128, 4660160, 9320320, 18640640]

約数ペア:

[(1, 18640640), (2, 9320320), (4, 4660160), (5, 3728128), (8, 2330080), (10, 1864064), (16, 1165040), (20, 932032), (32, 582520), (40, 466016), (64, 291260), (80, 233008), (128, 145630), (160, 116504), (256, 72815), (320, 58252), (640, 29126), (1280, 14563)]