290871

素因数分解:

$3^7\times 7^1\times {\mathrm{19}}^1$

素因数の和:47

約数の個数: 32

約数和(自身を含む): 524800

約数和(自身を除く): 233929

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 243, 399, 513, 567, 729, 1197, 1539, 1701, 2187, 3591, 4617, 5103, 10773, 13851, 15309, 32319, 41553, 96957, 290871]

約数ペア:

[(1, 290871), (3, 96957), (7, 41553), (9, 32319), (19, 15309), (21, 13851), (27, 10773), (57, 5103), (63, 4617), (81, 3591), (133, 2187), (171, 1701), (189, 1539), (243, 1197), (399, 729), (513, 567)]