79955920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2113}}^1$

素因数の和:2180

約数の個数: 80

約数和(自身を含む): 207611712

約数和(自身を除く): 127655792

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, 2113, 2365, 3440, 3784, 4226, 4730, 7568, 8452, 9460, 10565, 16904, 18920, 21130, 23243, 33808, 37840, 42260, 46486, 84520, 90859, 92972, 116215, 169040, 181718, 185944, 232430, 363436, 371888, 454295, 464860, 726872, 908590, 929720, 999449, 1453744, 1817180, 1859440, 1998898, 3634360, 3997796, 4997245, 7268720, 7995592, 9994490, 15991184, 19988980, 39977960, 79955920]

約数ペア:

[(1, 79955920), (2, 39977960), (4, 19988980), (5, 15991184), (8, 9994490), (10, 7995592), (11, 7268720), (16, 4997245), (20, 3997796), (22, 3634360), (40, 1998898), (43, 1859440), (44, 1817180), (55, 1453744), (80, 999449), (86, 929720), (88, 908590), (110, 726872), (172, 464860), (176, 454295), (215, 371888), (220, 363436), (344, 232430), (430, 185944), (440, 181718), (473, 169040), (688, 116215), (860, 92972), (880, 90859), (946, 84520), (1720, 46486), (1892, 42260), (2113, 37840), (2365, 33808), (3440, 23243), (3784, 21130), (4226, 18920), (4730, 16904), (7568, 10565), (8452, 9460)]