21539637

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16199883

約数列:

[1, 3, 7, 9, 21, 31, 41, 63, 93, 123, 217, 269, 279, 287, 369, 651, 807, 861, 1271, 1883, 1953, 2421, 2583, 3813, 5649, 8339, 8897, 11029, 11439, 16947, 25017, 26691, 33087, 58373, 75051, 77203, 80073, 99261, 175119, 231609, 341899, 525357, 694827, 1025697, 2393293, 3077091, 7179879, 21539637]

約数ペア:

[(1, 21539637), (3, 7179879), (7, 3077091), (9, 2393293), (21, 1025697), (31, 694827), (41, 525357), (63, 341899), (93, 231609), (123, 175119), (217, 99261), (269, 80073), (279, 77203), (287, 75051), (369, 58373), (651, 33087), (807, 26691), (861, 25017), (1271, 16947), (1883, 11439), (1953, 11029), (2421, 8897), (2583, 8339), (3813, 5649)]