21097989

素因数分解:

$3^7\times {\mathrm{11}}^1\times {\mathrm{877}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 34558080

約数和(自身を除く): 13460091

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 243, 297, 729, 877, 891, 2187, 2631, 2673, 7893, 8019, 9647, 23679, 24057, 28941, 71037, 86823, 213111, 260469, 639333, 781407, 1917999, 2344221, 7032663, 21097989]

約数ペア:

[(1, 21097989), (3, 7032663), (9, 2344221), (11, 1917999), (27, 781407), (33, 639333), (81, 260469), (99, 213111), (243, 86823), (297, 71037), (729, 28941), (877, 24057), (891, 23679), (2187, 9647), (2631, 8019), (2673, 7893)]