21501806

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{13159}}^1$

素因数の和:13223

約数の個数: 16

約数和(自身を含む): 34742400

約数和(自身を除く): 13240594

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 13159, 26318, 250021, 500042, 565837, 1131674, 10750903, 21501806]

約数ペア:

[(1, 21501806), (2, 10750903), (19, 1131674), (38, 565837), (43, 500042), (86, 250021), (817, 26318), (1634, 13159)]