19131812

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 40091520

約数和(自身を除く): 20959708

約数列:

[1, 2, 4, 7, 14, 28, 37, 59, 74, 118, 148, 236, 259, 313, 413, 518, 626, 826, 1036, 1252, 1652, 2183, 2191, 4366, 4382, 8732, 8764, 11581, 15281, 18467, 23162, 30562, 36934, 46324, 61124, 73868, 81067, 129269, 162134, 258538, 324268, 517076, 683279, 1366558, 2733116, 4782953, 9565906, 19131812]

約数ペア:

[(1, 19131812), (2, 9565906), (4, 4782953), (7, 2733116), (14, 1366558), (28, 683279), (37, 517076), (59, 324268), (74, 258538), (118, 162134), (148, 129269), (236, 81067), (259, 73868), (313, 61124), (413, 46324), (518, 36934), (626, 30562), (826, 23162), (1036, 18467), (1252, 15281), (1652, 11581), (2183, 8764), (2191, 8732), (4366, 4382)]