15981812

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2731}}^1$

素因数の和:2772

約数の個数: 48

約数和(自身を含む): 36718080

約数和(自身を除く): 20736268

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 209, 266, 308, 418, 532, 836, 1463, 2731, 2926, 5462, 5852, 10924, 19117, 30041, 38234, 51889, 60082, 76468, 103778, 120164, 207556, 210287, 363223, 420574, 570779, 726446, 841148, 1141558, 1452892, 2283116, 3995453, 7990906, 15981812]

約数ペア:

[(1, 15981812), (2, 7990906), (4, 3995453), (7, 2283116), (11, 1452892), (14, 1141558), (19, 841148), (22, 726446), (28, 570779), (38, 420574), (44, 363223), (76, 210287), (77, 207556), (133, 120164), (154, 103778), (209, 76468), (266, 60082), (308, 51889), (418, 38234), (532, 30041), (836, 19117), (1463, 10924), (2731, 5852), (2926, 5462)]