21272559

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5417}}^1$

素因数の和:5455

約数の個数: 32

約数和(自身を含む): 37449216

約数和(自身を除く): 16176657

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5417, 16251, 37919, 59587, 92089, 113757, 178761, 276267, 417109, 644623, 1012979, 1251327, 1933869, 3038937, 7090853, 21272559]

約数ペア:

[(1, 21272559), (3, 7090853), (7, 3038937), (11, 1933869), (17, 1251327), (21, 1012979), (33, 644623), (51, 417109), (77, 276267), (119, 178761), (187, 113757), (231, 92089), (357, 59587), (561, 37919), (1309, 16251), (3927, 5417)]