78745040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2081}}^1$

素因数の和:2148

約数の個数: 80

約数和(自身を含む): 204469056

約数和(自身を除く): 125724016

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 688, 860, 880, 946, 1720, 1892, 2081, 2365, 3440, 3784, 4162, 4730, 7568, 8324, 9460, 10405, 16648, 18920, 20810, 22891, 33296, 37840, 41620, 45782, 83240, 89483, 91564, 114455, 166480, 178966, 183128, 228910, 357932, 366256, 447415, 457820, 715864, 894830, 915640, 984313, 1431728, 1789660, 1831280, 1968626, 3579320, 3937252, 4921565, 7158640, 7874504, 9843130, 15749008, 19686260, 39372520, 78745040]

約数ペア:

[(1, 78745040), (2, 39372520), (4, 19686260), (5, 15749008), (8, 9843130), (10, 7874504), (11, 7158640), (16, 4921565), (20, 3937252), (22, 3579320), (40, 1968626), (43, 1831280), (44, 1789660), (55, 1431728), (80, 984313), (86, 915640), (88, 894830), (110, 715864), (172, 457820), (176, 447415), (215, 366256), (220, 357932), (344, 228910), (430, 183128), (440, 178966), (473, 166480), (688, 114455), (860, 91564), (880, 89483), (946, 83240), (1720, 45782), (1892, 41620), (2081, 37840), (2365, 33296), (3440, 22891), (3784, 20810), (4162, 18920), (4730, 16648), (7568, 10405), (8324, 9460)]