27220720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 66683232

約数和(自身を除く): 39462512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 43, 80, 82, 86, 164, 172, 193, 205, 215, 328, 344, 386, 410, 430, 656, 688, 772, 820, 860, 965, 1544, 1640, 1720, 1763, 1930, 3088, 3280, 3440, 3526, 3860, 7052, 7720, 7913, 8299, 8815, 14104, 15440, 15826, 16598, 17630, 28208, 31652, 33196, 35260, 39565, 41495, 63304, 66392, 70520, 79130, 82990, 126608, 132784, 141040, 158260, 165980, 316520, 331960, 340259, 633040, 663920, 680518, 1361036, 1701295, 2722072, 3402590, 5444144, 6805180, 13610360, 27220720]

約数ペア:

[(1, 27220720), (2, 13610360), (4, 6805180), (5, 5444144), (8, 3402590), (10, 2722072), (16, 1701295), (20, 1361036), (40, 680518), (41, 663920), (43, 633040), (80, 340259), (82, 331960), (86, 316520), (164, 165980), (172, 158260), (193, 141040), (205, 132784), (215, 126608), (328, 82990), (344, 79130), (386, 70520), (410, 66392), (430, 63304), (656, 41495), (688, 39565), (772, 35260), (820, 33196), (860, 31652), (965, 28208), (1544, 17630), (1640, 16598), (1720, 15826), (1763, 15440), (1930, 14104), (3088, 8815), (3280, 8299), (3440, 7913), (3526, 7720), (3860, 7052)]