21393280

素因数分解:

$2^7\times 5^1\times {\mathrm{33427}}^1$

素因数の和:33446

約数の個数: 32

約数和(自身を含む): 51144840

約数和(自身を除く): 29751560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33427, 66854, 133708, 167135, 267416, 334270, 534832, 668540, 1069664, 1337080, 2139328, 2674160, 4278656, 5348320, 10696640, 21393280]

約数ペア:

[(1, 21393280), (2, 10696640), (4, 5348320), (5, 4278656), (8, 2674160), (10, 2139328), (16, 1337080), (20, 1069664), (32, 668540), (40, 534832), (64, 334270), (80, 267416), (128, 167135), (160, 133708), (320, 66854), (640, 33427)]