19854891

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2789}}^1$

素因数の和:2915

約数の個数: 24

約数和(自身を含む): 33078240

約数和(自身を除く): 13223349

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2789, 7119, 8367, 19523, 25101, 58569, 175707, 315157, 945471, 2206099, 2836413, 6618297, 19854891]

約数ペア:

[(1, 19854891), (3, 6618297), (7, 2836413), (9, 2206099), (21, 945471), (63, 315157), (113, 175707), (339, 58569), (791, 25101), (1017, 19523), (2373, 8367), (2789, 7119)]