21395810

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{45523}}^1$

素因数の和:45577

約数の個数: 16

約数和(自身を含む): 39332736

約数和(自身を除く): 17936926

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 45523, 91046, 227615, 455230, 2139581, 4279162, 10697905, 21395810]

約数ペア:

[(1, 21395810), (2, 10697905), (5, 4279162), (10, 2139581), (47, 455230), (94, 227615), (235, 91046), (470, 45523)]