20464256

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 43605000

約数和(自身を除く): 23140744

約数列:

[1, 2, 4, 8, 16, 29, 32, 37, 58, 64, 74, 116, 128, 148, 149, 232, 296, 298, 464, 592, 596, 928, 1073, 1184, 1192, 1856, 2146, 2368, 2384, 3712, 4292, 4321, 4736, 4768, 5513, 8584, 8642, 9536, 11026, 17168, 17284, 19072, 22052, 34336, 34568, 44104, 68672, 69136, 88208, 137344, 138272, 159877, 176416, 276544, 319754, 352832, 553088, 639508, 705664, 1279016, 2558032, 5116064, 10232128, 20464256]

約数ペア:

[(1, 20464256), (2, 10232128), (4, 5116064), (8, 2558032), (16, 1279016), (29, 705664), (32, 639508), (37, 553088), (58, 352832), (64, 319754), (74, 276544), (116, 176416), (128, 159877), (148, 138272), (149, 137344), (232, 88208), (296, 69136), (298, 68672), (464, 44104), (592, 34568), (596, 34336), (928, 22052), (1073, 19072), (1184, 17284), (1192, 17168), (1856, 11026), (2146, 9536), (2368, 8642), (2384, 8584), (3712, 5513), (4292, 4768), (4321, 4736)]