21269440

素因数分解:

$2^6\times 5^1\times {\mathrm{66467}}^1$

素因数の和:66484

約数の個数: 28

約数和(自身を含む): 50648616

約数和(自身を除く): 29379176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66467, 132934, 265868, 332335, 531736, 664670, 1063472, 1329340, 2126944, 2658680, 4253888, 5317360, 10634720, 21269440]

約数ペア:

[(1, 21269440), (2, 10634720), (4, 5317360), (5, 4253888), (8, 2658680), (10, 2126944), (16, 1329340), (20, 1063472), (32, 664670), (40, 531736), (64, 332335), (80, 265868), (160, 132934), (320, 66467)]