20951667

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 35717760

約数和(自身を除く): 14766093

約数列:

[1, 3, 9, 11, 17, 33, 51, 59, 99, 153, 177, 187, 211, 531, 561, 633, 649, 1003, 1683, 1899, 1947, 2321, 3009, 3587, 5841, 6963, 9027, 10761, 11033, 12449, 20889, 32283, 33099, 37347, 39457, 99297, 112041, 118371, 136939, 211633, 355113, 410817, 634899, 1232451, 1904697, 2327963, 6983889, 20951667]

約数ペア:

[(1, 20951667), (3, 6983889), (9, 2327963), (11, 1904697), (17, 1232451), (33, 634899), (51, 410817), (59, 355113), (99, 211633), (153, 136939), (177, 118371), (187, 112041), (211, 99297), (531, 39457), (561, 37347), (633, 33099), (649, 32283), (1003, 20889), (1683, 12449), (1899, 11033), (1947, 10761), (2321, 9027), (3009, 6963), (3587, 5841)]