21917181

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1087}}^1$

素因数の和:1161

約数の個数: 32

約数和(自身を含む): 35094528

約数和(自身を除く): 13177347

約数列:

[1, 3, 11, 13, 33, 39, 47, 141, 143, 429, 517, 611, 1087, 1551, 1833, 3261, 6721, 11957, 14131, 20163, 35871, 42393, 51089, 153267, 155441, 466323, 561979, 664157, 1685937, 1992471, 7305727, 21917181]

約数ペア:

[(1, 21917181), (3, 7305727), (11, 1992471), (13, 1685937), (33, 664157), (39, 561979), (47, 466323), (141, 155441), (143, 153267), (429, 51089), (517, 42393), (611, 35871), (1087, 20163), (1551, 14131), (1833, 11957), (3261, 6721)]