208897975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{823}}^1$

素因数の和:928

約数の個数: 48

約数和(自身を含む): 308980224

約数和(自身を除く): 100082249

約数列:

[1, 5, 11, 13, 25, 55, 65, 71, 143, 275, 325, 355, 715, 781, 823, 923, 1775, 3575, 3905, 4115, 4615, 9053, 10153, 10699, 19525, 20575, 23075, 45265, 50765, 53495, 58433, 117689, 226325, 253825, 267475, 292165, 588445, 642763, 759629, 1460825, 2942225, 3213815, 3798145, 8355919, 16069075, 18990725, 41779595, 208897975]

約数ペア:

[(1, 208897975), (5, 41779595), (11, 18990725), (13, 16069075), (25, 8355919), (55, 3798145), (65, 3213815), (71, 2942225), (143, 1460825), (275, 759629), (325, 642763), (355, 588445), (715, 292165), (781, 267475), (823, 253825), (923, 226325), (1775, 117689), (3575, 58433), (3905, 53495), (4115, 50765), (4615, 45265), (9053, 23075), (10153, 20575), (10699, 19525)]