19377891

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{379}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 33196800

約数和(自身を除く): 13818909

約数列:

[1, 3, 9, 13, 19, 23, 39, 57, 69, 117, 171, 207, 247, 299, 379, 437, 741, 897, 1137, 1311, 2223, 2691, 3411, 3933, 4927, 5681, 7201, 8717, 14781, 17043, 21603, 26151, 44343, 51129, 64809, 78453, 93613, 113321, 165623, 280839, 339963, 496869, 842517, 1019889, 1490607, 2153099, 6459297, 19377891]

約数ペア:

[(1, 19377891), (3, 6459297), (9, 2153099), (13, 1490607), (19, 1019889), (23, 842517), (39, 496869), (57, 339963), (69, 280839), (117, 165623), (171, 113321), (207, 93613), (247, 78453), (299, 64809), (379, 51129), (437, 44343), (741, 26151), (897, 21603), (1137, 17043), (1311, 14781), (2223, 8717), (2691, 7201), (3411, 5681), (3933, 4927)]