78003891

素因数分解:

$3^4\times 7^1\times {\mathrm{137573}}^1$

素因数の和:137592

約数の個数: 20

約数和(自身を含む): 133171632

約数和(自身を除く): 55167741

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 137573, 412719, 963011, 1238157, 2889033, 3714471, 8667099, 11143413, 26001297, 78003891]

約数ペア:

[(1, 78003891), (3, 26001297), (7, 11143413), (9, 8667099), (21, 3714471), (27, 2889033), (63, 1238157), (81, 963011), (189, 412719), (567, 137573)]