21661248

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:320

約数の個数: 112

約数和(自身を含む): 66714624

約数和(自身を除く): 45053376

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 71, 84, 96, 112, 142, 168, 192, 213, 224, 227, 284, 336, 426, 448, 454, 497, 568, 672, 681, 852, 908, 994, 1136, 1344, 1362, 1491, 1589, 1704, 1816, 1988, 2272, 2724, 2982, 3178, 3408, 3632, 3976, 4544, 4767, 5448, 5964, 6356, 6816, 7264, 7952, 9534, 10896, 11928, 12712, 13632, 14528, 15904, 16117, 19068, 21792, 23856, 25424, 31808, 32234, 38136, 43584, 47712, 48351, 50848, 64468, 76272, 95424, 96702, 101696, 112819, 128936, 152544, 193404, 225638, 257872, 305088, 338457, 386808, 451276, 515744, 676914, 773616, 902552, 1031488, 1353828, 1547232, 1805104, 2707656, 3094464, 3610208, 5415312, 7220416, 10830624, 21661248]

約数ペア:

[(1, 21661248), (2, 10830624), (3, 7220416), (4, 5415312), (6, 3610208), (7, 3094464), (8, 2707656), (12, 1805104), (14, 1547232), (16, 1353828), (21, 1031488), (24, 902552), (28, 773616), (32, 676914), (42, 515744), (48, 451276), (56, 386808), (64, 338457), (71, 305088), (84, 257872), (96, 225638), (112, 193404), (142, 152544), (168, 128936), (192, 112819), (213, 101696), (224, 96702), (227, 95424), (284, 76272), (336, 64468), (426, 50848), (448, 48351), (454, 47712), (497, 43584), (568, 38136), (672, 32234), (681, 31808), (852, 25424), (908, 23856), (994, 21792), (1136, 19068), (1344, 16117), (1362, 15904), (1491, 14528), (1589, 13632), (1704, 12712), (1816, 11928), (1988, 10896), (2272, 9534), (2724, 7952), (2982, 7264), (3178, 6816), (3408, 6356), (3632, 5964), (3976, 5448), (4544, 4767)]