21340216

素因数分解:

$2^3\times {\mathrm{137}}^1\times {\mathrm{19471}}^1$

素因数の和:19614

約数の個数: 16

約数和(自身を含む): 40307040

約数和(自身を除く): 18966824

約数列:

[1, 2, 4, 8, 137, 274, 548, 1096, 19471, 38942, 77884, 155768, 2667527, 5335054, 10670108, 21340216]

約数ペア:

[(1, 21340216), (2, 10670108), (4, 5335054), (8, 2667527), (137, 155768), (274, 77884), (548, 38942), (1096, 19471)]