21850407

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 32617728

約数和(自身を除く): 10767321

約数列:

[1, 3, 9, 43, 129, 131, 387, 393, 431, 1179, 1293, 3879, 5633, 16899, 18533, 50697, 55599, 56461, 166797, 169383, 508149, 2427823, 7283469, 21850407]

約数ペア:

[(1, 21850407), (3, 7283469), (9, 2427823), (43, 508149), (129, 169383), (131, 166797), (387, 56461), (393, 55599), (431, 50697), (1179, 18533), (1293, 16899), (3879, 5633)]