18722372

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 37477440

約数和(自身を除く): 18755068

約数列:

[1, 2, 4, 17, 19, 34, 38, 43, 68, 76, 86, 172, 323, 337, 646, 674, 731, 817, 1292, 1348, 1462, 1634, 2924, 3268, 5729, 6403, 11458, 12806, 13889, 14491, 22916, 25612, 27778, 28982, 55556, 57964, 108851, 217702, 246347, 275329, 435404, 492694, 550658, 985388, 1101316, 4680593, 9361186, 18722372]

約数ペア:

[(1, 18722372), (2, 9361186), (4, 4680593), (17, 1101316), (19, 985388), (34, 550658), (38, 492694), (43, 435404), (68, 275329), (76, 246347), (86, 217702), (172, 108851), (323, 57964), (337, 55556), (646, 28982), (674, 27778), (731, 25612), (817, 22916), (1292, 14491), (1348, 13889), (1462, 12806), (1634, 11458), (2924, 6403), (3268, 5729)]