20986196

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1117}}^1$

素因数の和:1200

約数の個数: 48

約数和(自身を含む): 46580352

約数和(自身を除く): 25594156

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 61, 77, 122, 154, 244, 308, 427, 671, 854, 1117, 1342, 1708, 2234, 2684, 4468, 4697, 7819, 9394, 12287, 15638, 18788, 24574, 31276, 49148, 68137, 86009, 136274, 172018, 272548, 344036, 476959, 749507, 953918, 1499014, 1907836, 2998028, 5246549, 10493098, 20986196]

約数ペア:

[(1, 20986196), (2, 10493098), (4, 5246549), (7, 2998028), (11, 1907836), (14, 1499014), (22, 953918), (28, 749507), (44, 476959), (61, 344036), (77, 272548), (122, 172018), (154, 136274), (244, 86009), (308, 68137), (427, 49148), (671, 31276), (854, 24574), (1117, 18788), (1342, 15638), (1708, 12287), (2234, 9394), (2684, 7819), (4468, 4697)]