21406812

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3491}}^1$

素因数の和:3578

約数の個数: 48

約数和(自身を含む): 57883392

約数和(自身を除く): 36476580

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 73, 84, 146, 219, 292, 438, 511, 876, 1022, 1533, 2044, 3066, 3491, 6132, 6982, 10473, 13964, 20946, 24437, 41892, 48874, 73311, 97748, 146622, 254843, 293244, 509686, 764529, 1019372, 1529058, 1783901, 3058116, 3567802, 5351703, 7135604, 10703406, 21406812]

約数ペア:

[(1, 21406812), (2, 10703406), (3, 7135604), (4, 5351703), (6, 3567802), (7, 3058116), (12, 1783901), (14, 1529058), (21, 1019372), (28, 764529), (42, 509686), (73, 293244), (84, 254843), (146, 146622), (219, 97748), (292, 73311), (438, 48874), (511, 41892), (876, 24437), (1022, 20946), (1533, 13964), (2044, 10473), (3066, 6982), (3491, 6132)]