18115916

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 39391296

約数和(自身を除く): 21275380

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 157, 182, 314, 317, 364, 628, 634, 1099, 1268, 2041, 2198, 2219, 4082, 4121, 4396, 4438, 8164, 8242, 8876, 14287, 16484, 28574, 28847, 49769, 57148, 57694, 99538, 115388, 199076, 348383, 646997, 696766, 1293994, 1393532, 2587988, 4528979, 9057958, 18115916]

約数ペア:

[(1, 18115916), (2, 9057958), (4, 4528979), (7, 2587988), (13, 1393532), (14, 1293994), (26, 696766), (28, 646997), (52, 348383), (91, 199076), (157, 115388), (182, 99538), (314, 57694), (317, 57148), (364, 49769), (628, 28847), (634, 28574), (1099, 16484), (1268, 14287), (2041, 8876), (2198, 8242), (2219, 8164), (4082, 4438), (4121, 4396)]