128425905

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{811}}^1$

素因数の和:868

約数の個数: 80

約数和(自身を含む): 254669184

約数和(自身を除く): 126243279

約数列:

[1, 3, 5, 9, 15, 17, 23, 27, 45, 51, 69, 81, 85, 115, 135, 153, 207, 255, 345, 391, 405, 459, 621, 765, 811, 1035, 1173, 1377, 1863, 1955, 2295, 2433, 3105, 3519, 4055, 5865, 6885, 7299, 9315, 10557, 12165, 13787, 17595, 18653, 21897, 31671, 36495, 41361, 52785, 55959, 65691, 68935, 93265, 109485, 124083, 158355, 167877, 206805, 279795, 317101, 328455, 372249, 503631, 620415, 839385, 951303, 1116747, 1510893, 1585505, 1861245, 2518155, 2853909, 4756515, 5583735, 7554465, 8561727, 14269545, 25685181, 42808635, 128425905]

約数ペア:

[(1, 128425905), (3, 42808635), (5, 25685181), (9, 14269545), (15, 8561727), (17, 7554465), (23, 5583735), (27, 4756515), (45, 2853909), (51, 2518155), (69, 1861245), (81, 1585505), (85, 1510893), (115, 1116747), (135, 951303), (153, 839385), (207, 620415), (255, 503631), (345, 372249), (391, 328455), (405, 317101), (459, 279795), (621, 206805), (765, 167877), (811, 158355), (1035, 124083), (1173, 109485), (1377, 93265), (1863, 68935), (1955, 65691), (2295, 55959), (2433, 52785), (3105, 41361), (3519, 36495), (4055, 31671), (5865, 21897), (6885, 18653), (7299, 17595), (9315, 13787), (10557, 12165)]