20490938

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{25423}}^1$

素因数の和:25469

約数の個数: 16

約数和(自身を含む): 34169856

約数和(自身を除く): 13678918

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 25423, 50846, 330499, 660998, 788113, 1576226, 10245469, 20490938]

約数ペア:

[(1, 20490938), (2, 10245469), (13, 1576226), (26, 788113), (31, 660998), (62, 330499), (403, 50846), (806, 25423)]