21423632

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31139}}^1$

素因数の和:31190

約数の個数: 20

約数和(自身を含む): 42474960

約数和(自身を除く): 21051328

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31139, 62278, 124556, 249112, 498224, 1338977, 2677954, 5355908, 10711816, 21423632]

約数ペア:

[(1, 21423632), (2, 10711816), (4, 5355908), (8, 2677954), (16, 1338977), (43, 498224), (86, 249112), (172, 124556), (344, 62278), (688, 31139)]