18556986

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 25679814

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 71, 98, 127, 142, 147, 213, 254, 294, 343, 381, 426, 497, 686, 762, 889, 994, 1029, 1491, 1778, 2058, 2667, 2982, 3479, 5334, 6223, 6958, 9017, 10437, 12446, 18034, 18669, 20874, 24353, 27051, 37338, 43561, 48706, 54102, 63119, 73059, 87122, 126238, 130683, 146118, 189357, 261366, 378714, 441833, 883666, 1325499, 2650998, 3092831, 6185662, 9278493, 18556986]

約数ペア:

[(1, 18556986), (2, 9278493), (3, 6185662), (6, 3092831), (7, 2650998), (14, 1325499), (21, 883666), (42, 441833), (49, 378714), (71, 261366), (98, 189357), (127, 146118), (142, 130683), (147, 126238), (213, 87122), (254, 73059), (294, 63119), (343, 54102), (381, 48706), (426, 43561), (497, 37338), (686, 27051), (762, 24353), (889, 20874), (994, 18669), (1029, 18034), (1491, 12446), (1778, 10437), (2058, 9017), (2667, 6958), (2982, 6223), (3479, 5334)]