20105757

素因数分解:

$3^2\times 7^1\times {\mathrm{337}}^1\times {\mathrm{947}}^1$

素因数の和:1297

約数の個数: 24

約数和(自身を含む): 33324096

約数和(自身を除く): 13218339

約数列:

[1, 3, 7, 9, 21, 63, 337, 947, 1011, 2359, 2841, 3033, 6629, 7077, 8523, 19887, 21231, 59661, 319139, 957417, 2233973, 2872251, 6701919, 20105757]

約数ペア:

[(1, 20105757), (3, 6701919), (7, 2872251), (9, 2233973), (21, 957417), (63, 319139), (337, 59661), (947, 21231), (1011, 19887), (2359, 8523), (2841, 7077), (3033, 6629)]