18691886

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{947}}^1$

素因数の和:1159

約数の個数: 16

約数和(自身を含む): 28667520

約数和(自身を除く): 9975634

約数列:

[1, 2, 71, 139, 142, 278, 947, 1894, 9869, 19738, 67237, 131633, 134474, 263266, 9345943, 18691886]

約数ペア:

[(1, 18691886), (2, 9345943), (71, 263266), (139, 134474), (142, 131633), (278, 67237), (947, 19738), (1894, 9869)]