21490688

素因数分解:

$2^{10}\times {\mathrm{31}}^1\times {\mathrm{677}}^1$

素因数の和:728

約数の個数: 44

約数和(自身を含む): 44411712

約数和(自身を除く): 22921024

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 677, 992, 1024, 1354, 1984, 2708, 3968, 5416, 7936, 10832, 15872, 20987, 21664, 31744, 41974, 43328, 83948, 86656, 167896, 173312, 335792, 346624, 671584, 693248, 1343168, 2686336, 5372672, 10745344, 21490688]

約数ペア:

[(1, 21490688), (2, 10745344), (4, 5372672), (8, 2686336), (16, 1343168), (31, 693248), (32, 671584), (62, 346624), (64, 335792), (124, 173312), (128, 167896), (248, 86656), (256, 83948), (496, 43328), (512, 41974), (677, 31744), (992, 21664), (1024, 20987), (1354, 15872), (1984, 10832), (2708, 7936), (3968, 5416)]