215501209

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{75641}}^1$

素因数の和:75696

約数の個数: 16

約数和(自身を含む): 275942016

約数和(自身を除く): 60440807

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 75641, 529487, 832051, 2798717, 5824357, 19591019, 30785887, 215501209]

約数ペア:

[(1, 215501209), (7, 30785887), (11, 19591019), (37, 5824357), (77, 2798717), (259, 832051), (407, 529487), (2849, 75641)]