21647073

素因数分解:

$3^1\times 7^3\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 34144000

約数和(自身を除く): 12496927

約数列:

[1, 3, 7, 21, 49, 109, 147, 193, 327, 343, 579, 763, 1029, 1351, 2289, 4053, 5341, 9457, 16023, 21037, 28371, 37387, 63111, 66199, 112161, 147259, 198597, 441777, 1030813, 3092439, 7215691, 21647073]

約数ペア:

[(1, 21647073), (3, 7215691), (7, 3092439), (21, 1030813), (49, 441777), (109, 198597), (147, 147259), (193, 112161), (327, 66199), (343, 63111), (579, 37387), (763, 28371), (1029, 21037), (1351, 16023), (2289, 9457), (4053, 5341)]