21722379

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{857}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 35582976

約数和(自身を除く): 13860597

約数列:

[1, 3, 7, 17, 21, 51, 71, 119, 213, 357, 497, 857, 1207, 1491, 2571, 3621, 5999, 8449, 14569, 17997, 25347, 43707, 60847, 101983, 182541, 305949, 425929, 1034399, 1277787, 3103197, 7240793, 21722379]

約数ペア:

[(1, 21722379), (3, 7240793), (7, 3103197), (17, 1277787), (21, 1034399), (51, 425929), (71, 305949), (119, 182541), (213, 101983), (357, 60847), (497, 43707), (857, 25347), (1207, 17997), (1491, 14569), (2571, 8449), (3621, 5999)]