21548956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{373}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 44862048

約数和(自身を除く): 23313092

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 101, 143, 202, 286, 373, 404, 572, 746, 1111, 1313, 1492, 2222, 2626, 4103, 4444, 4849, 5252, 8206, 9698, 14443, 16412, 19396, 28886, 37673, 53339, 57772, 75346, 106678, 150692, 213356, 414403, 489749, 828806, 979498, 1657612, 1958996, 5387239, 10774478, 21548956]

約数ペア:

[(1, 21548956), (2, 10774478), (4, 5387239), (11, 1958996), (13, 1657612), (22, 979498), (26, 828806), (44, 489749), (52, 414403), (101, 213356), (143, 150692), (202, 106678), (286, 75346), (373, 57772), (404, 53339), (572, 37673), (746, 28886), (1111, 19396), (1313, 16412), (1492, 14443), (2222, 9698), (2626, 8206), (4103, 5252), (4444, 4849)]