865280195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:416

約数の個数: 64

約数和(自身を含む): 1234517760

約数和(自身を除く): 369237565

約数列:

[1, 5, 13, 17, 41, 65, 71, 85, 205, 221, 269, 355, 533, 697, 923, 1105, 1207, 1345, 2665, 2911, 3485, 3497, 4573, 4615, 6035, 9061, 11029, 14555, 15691, 17485, 19099, 22865, 37843, 45305, 49487, 55145, 59449, 78455, 95495, 143377, 187493, 189215, 247435, 248287, 297245, 324683, 643331, 716885, 783059, 937465, 1241435, 1623415, 2437409, 3216655, 3915295, 4220879, 10179767, 12187045, 13312003, 21104395, 50898835, 66560015, 173056039, 865280195]

約数ペア:

[(1, 865280195), (5, 173056039), (13, 66560015), (17, 50898835), (41, 21104395), (65, 13312003), (71, 12187045), (85, 10179767), (205, 4220879), (221, 3915295), (269, 3216655), (355, 2437409), (533, 1623415), (697, 1241435), (923, 937465), (1105, 783059), (1207, 716885), (1345, 643331), (2665, 324683), (2911, 297245), (3485, 248287), (3497, 247435), (4573, 189215), (4615, 187493), (6035, 143377), (9061, 95495), (11029, 78455), (14555, 59449), (15691, 55145), (17485, 49487), (19099, 45305), (22865, 37843)]