80728080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{9091}}^1$

素因数の和:9144

約数の個数: 80

約数和(自身を含む): 257049024

約数和(自身を除く): 176320944

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 60, 74, 80, 111, 120, 148, 185, 222, 240, 296, 370, 444, 555, 592, 740, 888, 1110, 1480, 1776, 2220, 2960, 4440, 8880, 9091, 18182, 27273, 36364, 45455, 54546, 72728, 90910, 109092, 136365, 145456, 181820, 218184, 272730, 336367, 363640, 436368, 545460, 672734, 727280, 1009101, 1090920, 1345468, 1681835, 2018202, 2181840, 2690936, 3363670, 4036404, 5045505, 5381872, 6727340, 8072808, 10091010, 13454680, 16145616, 20182020, 26909360, 40364040, 80728080]

約数ペア:

[(1, 80728080), (2, 40364040), (3, 26909360), (4, 20182020), (5, 16145616), (6, 13454680), (8, 10091010), (10, 8072808), (12, 6727340), (15, 5381872), (16, 5045505), (20, 4036404), (24, 3363670), (30, 2690936), (37, 2181840), (40, 2018202), (48, 1681835), (60, 1345468), (74, 1090920), (80, 1009101), (111, 727280), (120, 672734), (148, 545460), (185, 436368), (222, 363640), (240, 336367), (296, 272730), (370, 218184), (444, 181820), (555, 145456), (592, 136365), (740, 109092), (888, 90910), (1110, 72728), (1480, 54546), (1776, 45455), (2220, 36364), (2960, 27273), (4440, 18182), (8880, 9091)]