21423116

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 45993024

約数和(自身を除く): 24569908

約数列:

[1, 2, 4, 11, 13, 22, 26, 43, 44, 52, 67, 86, 134, 143, 169, 172, 268, 286, 338, 473, 559, 572, 676, 737, 871, 946, 1118, 1474, 1742, 1859, 1892, 2236, 2881, 2948, 3484, 3718, 5762, 6149, 7267, 7436, 9581, 11323, 11524, 12298, 14534, 19162, 22646, 24596, 29068, 31691, 37453, 38324, 45292, 63382, 74906, 79937, 124553, 126764, 149812, 159874, 249106, 319748, 411983, 486889, 498212, 823966, 973778, 1647932, 1947556, 5355779, 10711558, 21423116]

約数ペア:

[(1, 21423116), (2, 10711558), (4, 5355779), (11, 1947556), (13, 1647932), (22, 973778), (26, 823966), (43, 498212), (44, 486889), (52, 411983), (67, 319748), (86, 249106), (134, 159874), (143, 149812), (169, 126764), (172, 124553), (268, 79937), (286, 74906), (338, 63382), (473, 45292), (559, 38324), (572, 37453), (676, 31691), (737, 29068), (871, 24596), (946, 22646), (1118, 19162), (1474, 14534), (1742, 12298), (1859, 11524), (1892, 11323), (2236, 9581), (2881, 7436), (2948, 7267), (3484, 6149), (3718, 5762)]