78820720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2083}}^1$

素因数の和:2150

約数の個数: 80

約数和(自身を含む): 204665472

約数和(自身を除く): 125844752

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, 2083, 2365, 3440, 3784, 4166, 4730, 7568, 8332, 9460, 10415, 16664, 18920, 20830, 22913, 33328, 37840, 41660, 45826, 83320, 89569, 91652, 114565, 166640, 179138, 183304, 229130, 358276, 366608, 447845, 458260, 716552, 895690, 916520, 985259, 1433104, 1791380, 1833040, 1970518, 3582760, 3941036, 4926295, 7165520, 7882072, 9852590, 15764144, 19705180, 39410360, 78820720]

約数ペア:

[(1, 78820720), (2, 39410360), (4, 19705180), (5, 15764144), (8, 9852590), (10, 7882072), (11, 7165520), (16, 4926295), (20, 3941036), (22, 3582760), (40, 1970518), (43, 1833040), (44, 1791380), (55, 1433104), (80, 985259), (86, 916520), (88, 895690), (110, 716552), (172, 458260), (176, 447845), (215, 366608), (220, 358276), (344, 229130), (430, 183304), (440, 179138), (473, 166640), (688, 114565), (860, 91652), (880, 89569), (946, 83320), (1720, 45826), (1892, 41660), (2083, 37840), (2365, 33328), (3440, 22913), (3784, 20830), (4166, 18920), (4730, 16664), (7568, 10415), (8332, 9460)]