21441340

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{16001}}^1$

素因数の和:16077

約数の個数: 24

約数和(自身を含む): 45701712

約数和(自身を除く): 24260372

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 16001, 32002, 64004, 80005, 160010, 320020, 1072067, 2144134, 4288268, 5360335, 10720670, 21441340]

約数ペア:

[(1, 21441340), (2, 10720670), (4, 5360335), (5, 4288268), (10, 2144134), (20, 1072067), (67, 320020), (134, 160010), (268, 80005), (335, 64004), (670, 32002), (1340, 16001)]