21175726

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 38610432

約数和(自身を除く): 17434706

約数列:

[1, 2, 11, 13, 22, 26, 53, 106, 121, 127, 143, 242, 254, 286, 583, 689, 1166, 1378, 1397, 1573, 1651, 2794, 3146, 3302, 6413, 6731, 7579, 12826, 13462, 15158, 15367, 18161, 30734, 36322, 74041, 83369, 87503, 148082, 166738, 175006, 199771, 399542, 814451, 962533, 1628902, 1925066, 10587863, 21175726]

約数ペア:

[(1, 21175726), (2, 10587863), (11, 1925066), (13, 1628902), (22, 962533), (26, 814451), (53, 399542), (106, 199771), (121, 175006), (127, 166738), (143, 148082), (242, 87503), (254, 83369), (286, 74041), (583, 36322), (689, 30734), (1166, 18161), (1378, 15367), (1397, 15158), (1573, 13462), (1651, 12826), (2794, 7579), (3146, 6731), (3302, 6413)]