20709888

素因数分解:

$2^9\times 3^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 80

約数和(自身を含む): 56142240

約数和(自身を除く): 35432352

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 97, 128, 139, 192, 194, 256, 278, 291, 384, 388, 417, 512, 556, 582, 768, 776, 834, 1112, 1164, 1536, 1552, 1668, 2224, 2328, 3104, 3336, 4448, 4656, 6208, 6672, 8896, 9312, 12416, 13344, 13483, 17792, 18624, 24832, 26688, 26966, 35584, 37248, 40449, 49664, 53376, 53932, 71168, 74496, 80898, 106752, 107864, 148992, 161796, 213504, 215728, 323592, 431456, 647184, 862912, 1294368, 1725824, 2588736, 3451648, 5177472, 6903296, 10354944, 20709888]

約数ペア:

[(1, 20709888), (2, 10354944), (3, 6903296), (4, 5177472), (6, 3451648), (8, 2588736), (12, 1725824), (16, 1294368), (24, 862912), (32, 647184), (48, 431456), (64, 323592), (96, 215728), (97, 213504), (128, 161796), (139, 148992), (192, 107864), (194, 106752), (256, 80898), (278, 74496), (291, 71168), (384, 53932), (388, 53376), (417, 49664), (512, 40449), (556, 37248), (582, 35584), (768, 26966), (776, 26688), (834, 24832), (1112, 18624), (1164, 17792), (1536, 13483), (1552, 13344), (1668, 12416), (2224, 9312), (2328, 8896), (3104, 6672), (3336, 6208), (4448, 4656)]