21725495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 30093120

約数和(自身を除く): 8367625

約数列:

[1, 5, 11, 29, 53, 55, 145, 257, 265, 319, 583, 1285, 1537, 1595, 2827, 2915, 7453, 7685, 13621, 14135, 16907, 37265, 68105, 81983, 84535, 149831, 395009, 409915, 749155, 1975045, 4345099, 21725495]

約数ペア:

[(1, 21725495), (5, 4345099), (11, 1975045), (29, 749155), (53, 409915), (55, 395009), (145, 149831), (257, 84535), (265, 81983), (319, 68105), (583, 37265), (1285, 16907), (1537, 14135), (1595, 13621), (2827, 7685), (2915, 7453)]