19870212

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{379}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 49412160

約数和(自身を除く): 29541948

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 257, 379, 514, 758, 771, 1028, 1137, 1516, 1542, 2274, 3084, 4369, 4548, 6443, 8738, 12886, 13107, 17476, 19329, 25772, 26214, 38658, 52428, 77316, 97403, 194806, 292209, 389612, 584418, 1168836, 1655851, 3311702, 4967553, 6623404, 9935106, 19870212]

約数ペア:

[(1, 19870212), (2, 9935106), (3, 6623404), (4, 4967553), (6, 3311702), (12, 1655851), (17, 1168836), (34, 584418), (51, 389612), (68, 292209), (102, 194806), (204, 97403), (257, 77316), (379, 52428), (514, 38658), (758, 26214), (771, 25772), (1028, 19329), (1137, 17476), (1516, 13107), (1542, 12886), (2274, 8738), (3084, 6443), (4369, 4548)]