15889445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 22788864

約数和(自身を除く): 6899419

約数列:

[1, 5, 11, 13, 55, 65, 71, 143, 313, 355, 715, 781, 923, 1565, 3443, 3905, 4069, 4615, 10153, 17215, 20345, 22223, 44759, 50765, 111115, 223795, 244453, 288899, 1222265, 1444495, 3177889, 15889445]

約数ペア:

[(1, 15889445), (5, 3177889), (11, 1444495), (13, 1222265), (55, 288899), (65, 244453), (71, 223795), (143, 111115), (313, 50765), (355, 44759), (715, 22223), (781, 20345), (923, 17215), (1565, 10153), (3443, 4615), (3905, 4069)]