19992918

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 46904832

約数和(自身を除く): 26911914

約数列:

[1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 103, 173, 187, 206, 309, 346, 374, 519, 561, 618, 1038, 1122, 1133, 1751, 1903, 2266, 2941, 3399, 3502, 3806, 5253, 5709, 5882, 6798, 8823, 10506, 11418, 17646, 17819, 19261, 32351, 35638, 38522, 53457, 57783, 64702, 97053, 106914, 115566, 194106, 196009, 302923, 392018, 588027, 605846, 908769, 1176054, 1817538, 3332153, 6664306, 9996459, 19992918]

約数ペア:

[(1, 19992918), (2, 9996459), (3, 6664306), (6, 3332153), (11, 1817538), (17, 1176054), (22, 908769), (33, 605846), (34, 588027), (51, 392018), (66, 302923), (102, 196009), (103, 194106), (173, 115566), (187, 106914), (206, 97053), (309, 64702), (346, 57783), (374, 53457), (519, 38522), (561, 35638), (618, 32351), (1038, 19261), (1122, 17819), (1133, 17646), (1751, 11418), (1903, 10506), (2266, 8823), (2941, 6798), (3399, 5882), (3502, 5709), (3806, 5253)]