21079205

素因数分解:

$5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 29963520

約数和(自身を除く): 8884315

約数列:

[1, 5, 7, 35, 67, 89, 101, 335, 445, 469, 505, 623, 707, 2345, 3115, 3535, 5963, 6767, 8989, 29815, 33835, 41741, 44945, 47369, 62923, 208705, 236845, 314615, 602263, 3011315, 4215841, 21079205]

約数ペア:

[(1, 21079205), (5, 4215841), (7, 3011315), (35, 602263), (67, 314615), (89, 236845), (101, 208705), (335, 62923), (445, 47369), (469, 44945), (505, 41741), (623, 33835), (707, 29815), (2345, 8989), (3115, 6767), (3535, 5963)]