21678468

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:114

約数の個数: 144

約数和(自身を含む): 66017280

約数和(自身を除く): 44338812

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 19, 21, 28, 34, 38, 42, 47, 51, 57, 68, 76, 84, 94, 102, 114, 119, 133, 141, 188, 204, 228, 238, 266, 282, 289, 323, 329, 357, 399, 476, 532, 564, 578, 646, 658, 714, 798, 799, 867, 893, 969, 987, 1156, 1292, 1316, 1428, 1596, 1598, 1734, 1786, 1938, 1974, 2023, 2261, 2397, 2679, 3196, 3468, 3572, 3876, 3948, 4046, 4522, 4794, 5358, 5491, 5593, 6069, 6251, 6783, 8092, 9044, 9588, 10716, 10982, 11186, 12138, 12502, 13566, 13583, 15181, 16473, 16779, 18753, 21964, 22372, 24276, 25004, 27132, 27166, 30362, 32946, 33558, 37506, 38437, 40749, 45543, 54332, 60724, 65892, 67116, 75012, 76874, 81498, 91086, 95081, 106267, 115311, 153748, 162996, 182172, 190162, 212534, 230622, 258077, 285243, 318801, 380324, 425068, 461244, 516154, 570486, 637602, 774231, 1032308, 1140972, 1275204, 1548462, 1806539, 3096924, 3613078, 5419617, 7226156, 10839234, 21678468]

約数ペア:

[(1, 21678468), (2, 10839234), (3, 7226156), (4, 5419617), (6, 3613078), (7, 3096924), (12, 1806539), (14, 1548462), (17, 1275204), (19, 1140972), (21, 1032308), (28, 774231), (34, 637602), (38, 570486), (42, 516154), (47, 461244), (51, 425068), (57, 380324), (68, 318801), (76, 285243), (84, 258077), (94, 230622), (102, 212534), (114, 190162), (119, 182172), (133, 162996), (141, 153748), (188, 115311), (204, 106267), (228, 95081), (238, 91086), (266, 81498), (282, 76874), (289, 75012), (323, 67116), (329, 65892), (357, 60724), (399, 54332), (476, 45543), (532, 40749), (564, 38437), (578, 37506), (646, 33558), (658, 32946), (714, 30362), (798, 27166), (799, 27132), (867, 25004), (893, 24276), (969, 22372), (987, 21964), (1156, 18753), (1292, 16779), (1316, 16473), (1428, 15181), (1596, 13583), (1598, 13566), (1734, 12502), (1786, 12138), (1938, 11186), (1974, 10982), (2023, 10716), (2261, 9588), (2397, 9044), (2679, 8092), (3196, 6783), (3468, 6251), (3572, 6069), (3876, 5593), (3948, 5491), (4046, 5358), (4522, 4794)]