81765775

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 126214144

約数和(自身を除く): 44448369

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 127, 175, 283, 325, 455, 635, 889, 1415, 1651, 1981, 2275, 3175, 3679, 4445, 7075, 8255, 9905, 11557, 18395, 22225, 25753, 35941, 41275, 49525, 57785, 91975, 128765, 179705, 251587, 288925, 467233, 643825, 898525, 1257935, 2336165, 3270631, 6289675, 11680825, 16353155, 81765775]

約数ペア:

[(1, 81765775), (5, 16353155), (7, 11680825), (13, 6289675), (25, 3270631), (35, 2336165), (65, 1257935), (91, 898525), (127, 643825), (175, 467233), (283, 288925), (325, 251587), (455, 179705), (635, 128765), (889, 91975), (1415, 57785), (1651, 49525), (1981, 41275), (2275, 35941), (3175, 25753), (3679, 22225), (4445, 18395), (7075, 11557), (8255, 9905)]