21396160

素因数分解:

$2^6\times 5^1\times {\mathrm{66863}}^1$

素因数の和:66880

約数の個数: 28

約数和(自身を含む): 50950368

約数和(自身を除く): 29554208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66863, 133726, 267452, 334315, 534904, 668630, 1069808, 1337260, 2139616, 2674520, 4279232, 5349040, 10698080, 21396160]

約数ペア:

[(1, 21396160), (2, 10698080), (4, 5349040), (5, 4279232), (8, 2674520), (10, 2139616), (16, 1337260), (20, 1069808), (32, 668630), (40, 534904), (64, 334315), (80, 267452), (160, 133726), (320, 66863)]