19968679918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^2\times {\mathrm{239}}^1\times {\mathrm{1091}}^1$

素因数の和:1461

約数の個数: 48

約数和(自身を含む): 33408910080

約数和(自身を除く): 13440230162

約数列:

[1, 2, 11, 22, 59, 118, 239, 478, 649, 1091, 1298, 2182, 2629, 3481, 5258, 6962, 12001, 14101, 24002, 28202, 38291, 64369, 76582, 128738, 155111, 260749, 310222, 521498, 708059, 831959, 1416118, 1663918, 2868239, 3797771, 5736478, 7595542, 9151549, 15384191, 18303098, 30768382, 41775481, 83550962, 169226101, 338452202, 907667269, 1815334538, 9984339959, 19968679918]

約数ペア:

[(1, 19968679918), (2, 9984339959), (11, 1815334538), (22, 907667269), (59, 338452202), (118, 169226101), (239, 83550962), (478, 41775481), (649, 30768382), (1091, 18303098), (1298, 15384191), (2182, 9151549), (2629, 7595542), (3481, 5736478), (5258, 3797771), (6962, 2868239), (12001, 1663918), (14101, 1416118), (24002, 831959), (28202, 708059), (38291, 521498), (64369, 310222), (76582, 260749), (128738, 155111)]