21490326

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 128

約数和(自身を含む): 59028480

約数和(自身を除く): 37538154

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 22, 23, 26, 27, 33, 39, 46, 54, 66, 69, 78, 99, 117, 121, 138, 143, 198, 207, 234, 242, 253, 286, 297, 299, 351, 363, 414, 429, 506, 594, 598, 621, 702, 726, 759, 858, 897, 1089, 1242, 1287, 1331, 1518, 1573, 1794, 2178, 2277, 2574, 2662, 2691, 2783, 3146, 3267, 3289, 3861, 3993, 4554, 4719, 5382, 5566, 6534, 6578, 6831, 7722, 7986, 8073, 8349, 9438, 9867, 11979, 13662, 14157, 16146, 16698, 17303, 19734, 23958, 25047, 28314, 29601, 30613, 34606, 35937, 36179, 42471, 50094, 51909, 59202, 61226, 71874, 72358, 75141, 84942, 88803, 91839, 103818, 108537, 150282, 155727, 177606, 183678, 217074, 275517, 311454, 325611, 397969, 467181, 551034, 651222, 795938, 826551, 934362, 976833, 1193907, 1653102, 1953666, 2387814, 3581721, 7163442, 10745163, 21490326]

約数ペア:

[(1, 21490326), (2, 10745163), (3, 7163442), (6, 3581721), (9, 2387814), (11, 1953666), (13, 1653102), (18, 1193907), (22, 976833), (23, 934362), (26, 826551), (27, 795938), (33, 651222), (39, 551034), (46, 467181), (54, 397969), (66, 325611), (69, 311454), (78, 275517), (99, 217074), (117, 183678), (121, 177606), (138, 155727), (143, 150282), (198, 108537), (207, 103818), (234, 91839), (242, 88803), (253, 84942), (286, 75141), (297, 72358), (299, 71874), (351, 61226), (363, 59202), (414, 51909), (429, 50094), (506, 42471), (594, 36179), (598, 35937), (621, 34606), (702, 30613), (726, 29601), (759, 28314), (858, 25047), (897, 23958), (1089, 19734), (1242, 17303), (1287, 16698), (1331, 16146), (1518, 14157), (1573, 13662), (1794, 11979), (2178, 9867), (2277, 9438), (2574, 8349), (2662, 8073), (2691, 7986), (2783, 7722), (3146, 6831), (3267, 6578), (3289, 6534), (3861, 5566), (3993, 5382), (4554, 4719)]