20904814

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21031}}^1$

素因数の和:21111

約数の個数: 16

約数和(自身を含む): 36343296

約数和(自身を除く): 15438482

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 21031, 42062, 147217, 294434, 1493201, 2986402, 10452407, 20904814]

約数ペア:

[(1, 20904814), (2, 10452407), (7, 2986402), (14, 1493201), (71, 294434), (142, 147217), (497, 42062), (994, 21031)]