21708456

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:735

約数の個数: 128

約数和(自身を含む): 71746560

約数和(自身を除く): 50038104

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 17, 21, 22, 24, 28, 33, 34, 42, 44, 51, 56, 66, 68, 77, 84, 88, 102, 119, 132, 136, 154, 168, 187, 204, 231, 238, 264, 308, 357, 374, 408, 462, 476, 561, 616, 691, 714, 748, 924, 952, 1122, 1309, 1382, 1428, 1496, 1848, 2073, 2244, 2618, 2764, 2856, 3927, 4146, 4488, 4837, 5236, 5528, 7601, 7854, 8292, 9674, 10472, 11747, 14511, 15202, 15708, 16584, 19348, 22803, 23494, 29022, 30404, 31416, 35241, 38696, 45606, 46988, 53207, 58044, 60808, 70482, 82229, 91212, 93976, 106414, 116088, 129217, 140964, 159621, 164458, 182424, 212828, 246687, 258434, 281928, 319242, 328916, 387651, 425656, 493374, 516868, 638484, 657832, 775302, 904519, 986748, 1033736, 1276968, 1550604, 1809038, 1973496, 2713557, 3101208, 3618076, 5427114, 7236152, 10854228, 21708456]

約数ペア:

[(1, 21708456), (2, 10854228), (3, 7236152), (4, 5427114), (6, 3618076), (7, 3101208), (8, 2713557), (11, 1973496), (12, 1809038), (14, 1550604), (17, 1276968), (21, 1033736), (22, 986748), (24, 904519), (28, 775302), (33, 657832), (34, 638484), (42, 516868), (44, 493374), (51, 425656), (56, 387651), (66, 328916), (68, 319242), (77, 281928), (84, 258434), (88, 246687), (102, 212828), (119, 182424), (132, 164458), (136, 159621), (154, 140964), (168, 129217), (187, 116088), (204, 106414), (231, 93976), (238, 91212), (264, 82229), (308, 70482), (357, 60808), (374, 58044), (408, 53207), (462, 46988), (476, 45606), (561, 38696), (616, 35241), (691, 31416), (714, 30404), (748, 29022), (924, 23494), (952, 22803), (1122, 19348), (1309, 16584), (1382, 15708), (1428, 15202), (1496, 14511), (1848, 11747), (2073, 10472), (2244, 9674), (2618, 8292), (2764, 7854), (2856, 7601), (3927, 5528), (4146, 5236), (4488, 4837)]