21378610

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:283

約数の個数: 64

約数和(自身を含む): 45256320

約数和(自身を除く): 23877710

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 53, 55, 95, 106, 110, 190, 193, 209, 265, 386, 418, 530, 583, 965, 1007, 1045, 1166, 1930, 2014, 2090, 2123, 2915, 3667, 4246, 5035, 5830, 7334, 10070, 10229, 10615, 11077, 18335, 20458, 21230, 22154, 36670, 40337, 51145, 55385, 80674, 102290, 110770, 112519, 194351, 201685, 225038, 388702, 403370, 562595, 971755, 1125190, 1943510, 2137861, 4275722, 10689305, 21378610]

約数ペア:

[(1, 21378610), (2, 10689305), (5, 4275722), (10, 2137861), (11, 1943510), (19, 1125190), (22, 971755), (38, 562595), (53, 403370), (55, 388702), (95, 225038), (106, 201685), (110, 194351), (190, 112519), (193, 110770), (209, 102290), (265, 80674), (386, 55385), (418, 51145), (530, 40337), (583, 36670), (965, 22154), (1007, 21230), (1045, 20458), (1166, 18335), (1930, 11077), (2014, 10615), (2090, 10229), (2123, 10070), (2915, 7334), (3667, 5830), (4246, 5035)]