128418765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 227308032

約数和(自身を除く): 98889267

約数列:

[1, 3, 5, 15, 17, 41, 51, 71, 85, 123, 173, 205, 213, 255, 355, 519, 615, 697, 865, 1065, 1207, 2091, 2595, 2911, 2941, 3485, 3621, 6035, 7093, 8733, 8823, 10455, 12283, 14555, 14705, 18105, 21279, 35465, 36849, 43665, 44115, 49487, 61415, 106395, 120581, 148461, 184245, 208811, 247435, 361743, 503603, 602905, 626433, 742305, 1044055, 1510809, 1808715, 2518015, 3132165, 7554045, 8561251, 25683753, 42806255, 128418765]

約数ペア:

[(1, 128418765), (3, 42806255), (5, 25683753), (15, 8561251), (17, 7554045), (41, 3132165), (51, 2518015), (71, 1808715), (85, 1510809), (123, 1044055), (173, 742305), (205, 626433), (213, 602905), (255, 503603), (355, 361743), (519, 247435), (615, 208811), (697, 184245), (865, 148461), (1065, 120581), (1207, 106395), (2091, 61415), (2595, 49487), (2911, 44115), (2941, 43665), (3485, 36849), (3621, 35465), (6035, 21279), (7093, 18105), (8733, 14705), (8823, 14555), (10455, 12283)]