18973994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{15527}}^1$

素因数の和:15589

約数の個数: 16

約数和(自身を含む): 31304448

約数和(自身を除く): 12330454

約数列:

[1, 2, 13, 26, 47, 94, 611, 1222, 15527, 31054, 201851, 403702, 729769, 1459538, 9486997, 18973994]

約数ペア:

[(1, 18973994), (2, 9486997), (13, 1459538), (26, 729769), (47, 403702), (94, 201851), (611, 31054), (1222, 15527)]