209225918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{359}}^1\times {\mathrm{449}}^1$

素因数の和:880

約数の個数: 32

約数和(自身を含む): 349920000

約数和(自身を除く): 140694082

約数列:

[1, 2, 11, 22, 59, 118, 359, 449, 649, 718, 898, 1298, 3949, 4939, 7898, 9878, 21181, 26491, 42362, 52982, 161191, 232991, 291401, 322382, 465982, 582802, 1773101, 3546202, 9510269, 19020538, 104612959, 209225918]

約数ペア:

[(1, 209225918), (2, 104612959), (11, 19020538), (22, 9510269), (59, 3546202), (118, 1773101), (359, 582802), (449, 465982), (649, 322382), (718, 291401), (898, 232991), (1298, 161191), (3949, 52982), (4939, 42362), (7898, 26491), (9878, 21181)]