20887497544

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{249397}}^1$

素因数の和:249470

約数の個数: 48

約数和(自身を含む): 42759287100

約数和(自身を除く): 21871789556

約数列:

[1, 2, 4, 8, 19, 29, 38, 58, 76, 116, 152, 232, 361, 551, 722, 1102, 1444, 2204, 2888, 4408, 10469, 20938, 41876, 83752, 249397, 498794, 997588, 1995176, 4738543, 7232513, 9477086, 14465026, 18954172, 28930052, 37908344, 57860104, 90032317, 137417747, 180064634, 274835494, 360129268, 549670988, 720258536, 1099341976, 2610937193, 5221874386, 10443748772, 20887497544]

約数ペア:

[(1, 20887497544), (2, 10443748772), (4, 5221874386), (8, 2610937193), (19, 1099341976), (29, 720258536), (38, 549670988), (58, 360129268), (76, 274835494), (116, 180064634), (152, 137417747), (232, 90032317), (361, 57860104), (551, 37908344), (722, 28930052), (1102, 18954172), (1444, 14465026), (2204, 9477086), (2888, 7232513), (4408, 4738543), (10469, 1995176), (20938, 997588), (41876, 498794), (83752, 249397)]