21298416

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{607}}^1$

素因数の和:678

約数の個数: 80

約数和(自身を含む): 59710464

約数和(自身を除く): 38412048

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 43, 48, 51, 68, 86, 102, 129, 136, 172, 204, 258, 272, 344, 408, 516, 607, 688, 731, 816, 1032, 1214, 1462, 1821, 2064, 2193, 2428, 2924, 3642, 4386, 4856, 5848, 7284, 8772, 9712, 10319, 11696, 14568, 17544, 20638, 26101, 29136, 30957, 35088, 41276, 52202, 61914, 78303, 82552, 104404, 123828, 156606, 165104, 208808, 247656, 313212, 417616, 443717, 495312, 626424, 887434, 1252848, 1331151, 1774868, 2662302, 3549736, 5324604, 7099472, 10649208, 21298416]

約数ペア:

[(1, 21298416), (2, 10649208), (3, 7099472), (4, 5324604), (6, 3549736), (8, 2662302), (12, 1774868), (16, 1331151), (17, 1252848), (24, 887434), (34, 626424), (43, 495312), (48, 443717), (51, 417616), (68, 313212), (86, 247656), (102, 208808), (129, 165104), (136, 156606), (172, 123828), (204, 104404), (258, 82552), (272, 78303), (344, 61914), (408, 52202), (516, 41276), (607, 35088), (688, 30957), (731, 29136), (816, 26101), (1032, 20638), (1214, 17544), (1462, 14568), (1821, 11696), (2064, 10319), (2193, 9712), (2428, 8772), (2924, 7284), (3642, 5848), (4386, 4856)]