81364720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2063}}^1$

素因数の和:2122

約数の個数: 80

約数和(自身を含む): 207308160

約数和(自身を除く): 125943440

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 34, 40, 58, 68, 80, 85, 116, 136, 145, 170, 232, 272, 290, 340, 464, 493, 580, 680, 986, 1160, 1360, 1972, 2063, 2320, 2465, 3944, 4126, 4930, 7888, 8252, 9860, 10315, 16504, 19720, 20630, 33008, 35071, 39440, 41260, 59827, 70142, 82520, 119654, 140284, 165040, 175355, 239308, 280568, 299135, 350710, 478616, 561136, 598270, 701420, 957232, 1017059, 1196540, 1402840, 2034118, 2393080, 2805680, 4068236, 4786160, 5085295, 8136472, 10170590, 16272944, 20341180, 40682360, 81364720]

約数ペア:

[(1, 81364720), (2, 40682360), (4, 20341180), (5, 16272944), (8, 10170590), (10, 8136472), (16, 5085295), (17, 4786160), (20, 4068236), (29, 2805680), (34, 2393080), (40, 2034118), (58, 1402840), (68, 1196540), (80, 1017059), (85, 957232), (116, 701420), (136, 598270), (145, 561136), (170, 478616), (232, 350710), (272, 299135), (290, 280568), (340, 239308), (464, 175355), (493, 165040), (580, 140284), (680, 119654), (986, 82520), (1160, 70142), (1360, 59827), (1972, 41260), (2063, 39440), (2320, 35071), (2465, 33008), (3944, 20630), (4126, 19720), (4930, 16504), (7888, 10315), (8252, 9860)]