21658347

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{4691}}^1$

素因数の和:4725

約数の個数: 24

約数和(自身を含む): 34157760

約数和(自身を除く): 12499413

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 4617, 4691, 14073, 42219, 89129, 126657, 267387, 379971, 802161, 1139913, 2406483, 7219449, 21658347]

約数ペア:

[(1, 21658347), (3, 7219449), (9, 2406483), (19, 1139913), (27, 802161), (57, 379971), (81, 267387), (171, 126657), (243, 89129), (513, 42219), (1539, 14073), (4617, 4691)]