18991346

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 34482240

約数和(自身を除く): 15490894

約数列:

[1, 2, 11, 17, 22, 29, 34, 58, 103, 187, 206, 289, 319, 374, 493, 578, 638, 986, 1133, 1751, 2266, 2987, 3179, 3502, 5423, 5974, 6358, 8381, 10846, 16762, 19261, 29767, 32857, 38522, 50779, 59534, 65714, 92191, 101558, 184382, 327437, 558569, 654874, 863243, 1117138, 1726486, 9495673, 18991346]

約数ペア:

[(1, 18991346), (2, 9495673), (11, 1726486), (17, 1117138), (22, 863243), (29, 654874), (34, 558569), (58, 327437), (103, 184382), (187, 101558), (206, 92191), (289, 65714), (319, 59534), (374, 50779), (493, 38522), (578, 32857), (638, 29767), (986, 19261), (1133, 16762), (1751, 10846), (2266, 8381), (2987, 6358), (3179, 5974), (3502, 5423)]