21000884810

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{5021}}^1$

素因数の和:5279

約数の個数: 64

約数和(自身を含む): 39519684864

約数和(自身を除く): 18518800054

約数列:

[1, 2, 5, 10, 43, 71, 86, 137, 142, 215, 274, 355, 430, 685, 710, 1370, 3053, 5021, 5891, 6106, 9727, 10042, 11782, 15265, 19454, 25105, 29455, 30530, 48635, 50210, 58910, 97270, 215903, 356491, 418261, 431806, 687877, 712982, 836522, 1079515, 1375754, 1782455, 2091305, 2159030, 3439385, 3564910, 4182610, 6878770, 15329113, 29578711, 30658226, 48839267, 59157422, 76645565, 97678534, 147893555, 153291130, 244196335, 295787110, 488392670, 2100088481, 4200176962, 10500442405, 21000884810]

約数ペア:

[(1, 21000884810), (2, 10500442405), (5, 4200176962), (10, 2100088481), (43, 488392670), (71, 295787110), (86, 244196335), (137, 153291130), (142, 147893555), (215, 97678534), (274, 76645565), (355, 59157422), (430, 48839267), (685, 30658226), (710, 29578711), (1370, 15329113), (3053, 6878770), (5021, 4182610), (5891, 3564910), (6106, 3439385), (9727, 2159030), (10042, 2091305), (11782, 1782455), (15265, 1375754), (19454, 1079515), (25105, 836522), (29455, 712982), (30530, 687877), (48635, 431806), (50210, 418261), (58910, 356491), (97270, 215903)]