18639786

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:519

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 25683414

約数列:

[1, 2, 3, 6, 11, 17, 22, 33, 34, 37, 51, 66, 74, 102, 111, 187, 222, 374, 407, 449, 561, 629, 814, 898, 1122, 1221, 1258, 1347, 1887, 2442, 2694, 3774, 4939, 6919, 7633, 9878, 13838, 14817, 15266, 16613, 20757, 22899, 29634, 33226, 41514, 45798, 49839, 83963, 99678, 167926, 182743, 251889, 282421, 365486, 503778, 548229, 564842, 847263, 1096458, 1694526, 3106631, 6213262, 9319893, 18639786]

約数ペア:

[(1, 18639786), (2, 9319893), (3, 6213262), (6, 3106631), (11, 1694526), (17, 1096458), (22, 847263), (33, 564842), (34, 548229), (37, 503778), (51, 365486), (66, 282421), (74, 251889), (102, 182743), (111, 167926), (187, 99678), (222, 83963), (374, 49839), (407, 45798), (449, 41514), (561, 33226), (629, 29634), (814, 22899), (898, 20757), (1122, 16613), (1221, 15266), (1258, 14817), (1347, 13838), (1887, 9878), (2442, 7633), (2694, 6919), (3774, 4939)]