21711921

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{487}}^1$

素因数の和:701

約数の個数: 32

約数和(自身を含む): 36354048

約数和(自身を除く): 14642127

約数列:

[1, 3, 7, 11, 21, 33, 77, 193, 231, 487, 579, 1351, 1461, 2123, 3409, 4053, 5357, 6369, 10227, 14861, 16071, 37499, 44583, 93991, 112497, 281973, 657937, 1033901, 1973811, 3101703, 7237307, 21711921]

約数ペア:

[(1, 21711921), (3, 7237307), (7, 3101703), (11, 1973811), (21, 1033901), (33, 657937), (77, 281973), (193, 112497), (231, 93991), (487, 44583), (579, 37499), (1351, 16071), (1461, 14861), (2123, 10227), (3409, 6369), (4053, 5357)]