18702747

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{967}}^1$

素因数の和:1287

約数の個数: 24

約数和(自身を含む): 31006976

約数和(自身を除く): 12304229

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 967, 2149, 2763, 2901, 6447, 6769, 8703, 19341, 20307, 60921, 296869, 890607, 2078083, 2671821, 6234249, 18702747]

約数ペア:

[(1, 18702747), (3, 6234249), (7, 2671821), (9, 2078083), (21, 890607), (63, 296869), (307, 60921), (921, 20307), (967, 19341), (2149, 8703), (2763, 6769), (2901, 6447)]