21157906

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1033}}^1$

素因数の和:1079

約数の個数: 48

約数和(自身を含む): 42435360

約数和(自身を除く): 21277454

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 49, 77, 98, 133, 154, 209, 266, 418, 539, 931, 1033, 1078, 1463, 1862, 2066, 2926, 7231, 10241, 11363, 14462, 19627, 20482, 22726, 39254, 50617, 79541, 101234, 137389, 159082, 215897, 274778, 431794, 556787, 961723, 1113574, 1511279, 1923446, 3022558, 10578953, 21157906]

約数ペア:

[(1, 21157906), (2, 10578953), (7, 3022558), (11, 1923446), (14, 1511279), (19, 1113574), (22, 961723), (38, 556787), (49, 431794), (77, 274778), (98, 215897), (133, 159082), (154, 137389), (209, 101234), (266, 79541), (418, 50617), (539, 39254), (931, 22726), (1033, 20482), (1078, 19627), (1463, 14462), (1862, 11363), (2066, 10241), (2926, 7231)]