21804381

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2713}}^1$

素因数の和:2785

約数の個数: 24

約数和(自身を含む): 33870720

約数和(自身を除く): 12066339

約数列:

[1, 3, 9, 19, 47, 57, 141, 171, 423, 893, 2679, 2713, 8037, 8139, 24417, 51547, 127511, 154641, 382533, 463923, 1147599, 2422709, 7268127, 21804381]

約数ペア:

[(1, 21804381), (3, 7268127), (9, 2422709), (19, 1147599), (47, 463923), (57, 382533), (141, 154641), (171, 127511), (423, 51547), (893, 24417), (2679, 8139), (2713, 8037)]