81342960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19937}}^1$

素因数の和:19970

約数の個数: 80

約数和(自身を含む): 267009696

約数和(自身を除く): 185666736

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 19937, 39874, 59811, 79748, 99685, 119622, 159496, 199370, 239244, 299055, 318992, 338929, 398740, 478488, 598110, 677858, 797480, 956976, 1016787, 1196220, 1355716, 1594960, 1694645, 2033574, 2392440, 2711432, 3389290, 4067148, 4784880, 5083935, 5422864, 6778580, 8134296, 10167870, 13557160, 16268592, 20335740, 27114320, 40671480, 81342960]

約数ペア:

[(1, 81342960), (2, 40671480), (3, 27114320), (4, 20335740), (5, 16268592), (6, 13557160), (8, 10167870), (10, 8134296), (12, 6778580), (15, 5422864), (16, 5083935), (17, 4784880), (20, 4067148), (24, 3389290), (30, 2711432), (34, 2392440), (40, 2033574), (48, 1694645), (51, 1594960), (60, 1355716), (68, 1196220), (80, 1016787), (85, 956976), (102, 797480), (120, 677858), (136, 598110), (170, 478488), (204, 398740), (240, 338929), (255, 318992), (272, 299055), (340, 239244), (408, 199370), (510, 159496), (680, 119622), (816, 99685), (1020, 79748), (1360, 59811), (2040, 39874), (4080, 19937)]