21561485

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 8851315

約数列:

[1, 5, 11, 19, 47, 55, 95, 209, 235, 439, 517, 893, 1045, 2195, 2585, 4465, 4829, 8341, 9823, 20633, 24145, 41705, 49115, 91751, 103165, 226963, 392027, 458755, 1134815, 1960135, 4312297, 21561485]

約数ペア:

[(1, 21561485), (5, 4312297), (11, 1960135), (19, 1134815), (47, 458755), (55, 392027), (95, 226963), (209, 103165), (235, 91751), (439, 49115), (517, 41705), (893, 24145), (1045, 20633), (2195, 9823), (2585, 8341), (4465, 4829)]