128977280

素因数分解:

$2^7\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1471}}^1$

素因数の和:1627

約数の個数: 64

約数和(自身を含む): 310798080

約数和(自身を除く): 181820800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 137, 160, 274, 320, 548, 640, 685, 1096, 1370, 1471, 2192, 2740, 2942, 4384, 5480, 5884, 7355, 8768, 10960, 11768, 14710, 17536, 21920, 23536, 29420, 43840, 47072, 58840, 87680, 94144, 117680, 188288, 201527, 235360, 403054, 470720, 806108, 941440, 1007635, 1612216, 2015270, 3224432, 4030540, 6448864, 8061080, 12897728, 16122160, 25795456, 32244320, 64488640, 128977280]

約数ペア:

[(1, 128977280), (2, 64488640), (4, 32244320), (5, 25795456), (8, 16122160), (10, 12897728), (16, 8061080), (20, 6448864), (32, 4030540), (40, 3224432), (64, 2015270), (80, 1612216), (128, 1007635), (137, 941440), (160, 806108), (274, 470720), (320, 403054), (548, 235360), (640, 201527), (685, 188288), (1096, 117680), (1370, 94144), (1471, 87680), (2192, 58840), (2740, 47072), (2942, 43840), (4384, 29420), (5480, 23536), (5884, 21920), (7355, 17536), (8768, 14710), (10960, 11768)]