19996821

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2477}}^1$

素因数の和:2522

約数の個数: 32

約数和(自身を含む): 33304320

約数和(自身を除く): 13307499

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 207, 299, 351, 621, 897, 2477, 2691, 7431, 8073, 22293, 32201, 56971, 66879, 96603, 170913, 289809, 512739, 740623, 869427, 1538217, 2221869, 6665607, 19996821]

約数ペア:

[(1, 19996821), (3, 6665607), (9, 2221869), (13, 1538217), (23, 869427), (27, 740623), (39, 512739), (69, 289809), (117, 170913), (207, 96603), (299, 66879), (351, 56971), (621, 32201), (897, 22293), (2477, 8073), (2691, 7431)]