19992807

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2719}}^1$

素因数の和:2787

約数の個数: 24

約数和(自身を含む): 31116800

約数和(自身を除く): 11123993

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 2719, 7353, 8157, 24471, 51661, 116917, 154983, 350751, 464949, 1052253, 2221423, 6664269, 19992807]

約数ペア:

[(1, 19992807), (3, 6664269), (9, 2221423), (19, 1052253), (43, 464949), (57, 350751), (129, 154983), (171, 116917), (387, 51661), (817, 24471), (2451, 8157), (2719, 7353)]