21242109

素因数分解:

$3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{5651}}^1$

素因数の和:5840

約数の個数: 16

約数和(自身を含む): 32555520

約数和(自身を除く): 11313411

約数列:

[1, 3, 7, 21, 179, 537, 1253, 3759, 5651, 16953, 39557, 118671, 1011529, 3034587, 7080703, 21242109]

約数ペア:

[(1, 21242109), (3, 7080703), (7, 3034587), (21, 1011529), (179, 118671), (537, 39557), (1253, 16953), (3759, 5651)]