21507816

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{317}}^1$

素因数の和:594

約数の個数: 64

約数和(自身を含む): 59071680

約数和(自身を除く): 37563864

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 257, 264, 317, 514, 634, 771, 951, 1028, 1268, 1542, 1902, 2056, 2536, 2827, 3084, 3487, 3804, 5654, 6168, 6974, 7608, 8481, 10461, 11308, 13948, 16962, 20922, 22616, 27896, 33924, 41844, 67848, 81469, 83688, 162938, 244407, 325876, 488814, 651752, 896159, 977628, 1792318, 1955256, 2688477, 3584636, 5376954, 7169272, 10753908, 21507816]

約数ペア:

[(1, 21507816), (2, 10753908), (3, 7169272), (4, 5376954), (6, 3584636), (8, 2688477), (11, 1955256), (12, 1792318), (22, 977628), (24, 896159), (33, 651752), (44, 488814), (66, 325876), (88, 244407), (132, 162938), (257, 83688), (264, 81469), (317, 67848), (514, 41844), (634, 33924), (771, 27896), (951, 22616), (1028, 20922), (1268, 16962), (1542, 13948), (1902, 11308), (2056, 10461), (2536, 8481), (2827, 7608), (3084, 6974), (3487, 6168), (3804, 5654)]