21268016

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:370

約数の個数: 80

約数和(自身を含む): 52401408

約数和(自身を除く): 31133392

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 61, 77, 88, 112, 122, 154, 176, 244, 283, 308, 427, 488, 566, 616, 671, 854, 976, 1132, 1232, 1342, 1708, 1981, 2264, 2684, 3113, 3416, 3962, 4528, 4697, 5368, 6226, 6832, 7924, 9394, 10736, 12452, 15848, 17263, 18788, 21791, 24904, 31696, 34526, 37576, 43582, 49808, 69052, 75152, 87164, 120841, 138104, 174328, 189893, 241682, 276208, 348656, 379786, 483364, 759572, 966728, 1329251, 1519144, 1933456, 2658502, 3038288, 5317004, 10634008, 21268016]

約数ペア:

[(1, 21268016), (2, 10634008), (4, 5317004), (7, 3038288), (8, 2658502), (11, 1933456), (14, 1519144), (16, 1329251), (22, 966728), (28, 759572), (44, 483364), (56, 379786), (61, 348656), (77, 276208), (88, 241682), (112, 189893), (122, 174328), (154, 138104), (176, 120841), (244, 87164), (283, 75152), (308, 69052), (427, 49808), (488, 43582), (566, 37576), (616, 34526), (671, 31696), (854, 24904), (976, 21791), (1132, 18788), (1232, 17263), (1342, 15848), (1708, 12452), (1981, 10736), (2264, 9394), (2684, 7924), (3113, 6832), (3416, 6226), (3962, 5368), (4528, 4697)]