21308308

素因数分解:

$2^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{3863}}^1$

素因数の和:4071

約数の個数: 24

約数和(自身を含む): 42844032

約数和(自身を除く): 21535724

約数列:

[1, 2, 4, 7, 14, 28, 197, 394, 788, 1379, 2758, 3863, 5516, 7726, 15452, 27041, 54082, 108164, 761011, 1522022, 3044044, 5327077, 10654154, 21308308]

約数ペア:

[(1, 21308308), (2, 10654154), (4, 5327077), (7, 3044044), (14, 1522022), (28, 761011), (197, 108164), (394, 54082), (788, 27041), (1379, 15452), (2758, 7726), (3863, 5516)]