21095745

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 16825215

約数列:

[1, 3, 5, 11, 15, 33, 55, 59, 121, 165, 177, 197, 295, 363, 591, 605, 649, 885, 985, 1815, 1947, 2167, 2955, 3245, 6501, 7139, 9735, 10835, 11623, 21417, 23837, 32505, 34869, 35695, 58115, 71511, 107085, 119185, 127853, 174345, 357555, 383559, 639265, 1406383, 1917795, 4219149, 7031915, 21095745]

約数ペア:

[(1, 21095745), (3, 7031915), (5, 4219149), (11, 1917795), (15, 1406383), (33, 639265), (55, 383559), (59, 357555), (121, 174345), (165, 127853), (177, 119185), (197, 107085), (295, 71511), (363, 58115), (591, 35695), (605, 34869), (649, 32505), (885, 23837), (985, 21417), (1815, 11623), (1947, 10835), (2167, 9735), (2955, 7139), (3245, 6501)]