20318476

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 39223296

約数和(自身を除く): 18904820

約数列:

[1, 2, 4, 23, 37, 46, 47, 74, 92, 94, 127, 148, 188, 254, 508, 851, 1081, 1702, 1739, 2162, 2921, 3404, 3478, 4324, 4699, 5842, 5969, 6956, 9398, 11684, 11938, 18796, 23876, 39997, 79994, 108077, 137287, 159988, 216154, 220853, 274574, 432308, 441706, 549148, 883412, 5079619, 10159238, 20318476]

約数ペア:

[(1, 20318476), (2, 10159238), (4, 5079619), (23, 883412), (37, 549148), (46, 441706), (47, 432308), (74, 274574), (92, 220853), (94, 216154), (127, 159988), (148, 137287), (188, 108077), (254, 79994), (508, 39997), (851, 23876), (1081, 18796), (1702, 11938), (1739, 11684), (2162, 9398), (2921, 6956), (3404, 5969), (3478, 5842), (4324, 4699)]