21213962

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{1789}}^1$

素因数の和:1827

約数の個数: 36

約数和(自身を含む): 40709970

約数和(自身を除く): 19496008

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 121, 154, 242, 539, 847, 1078, 1694, 1789, 3578, 5929, 11858, 12523, 19679, 25046, 39358, 87661, 137753, 175322, 216469, 275506, 432938, 964271, 1515283, 1928542, 3030566, 10606981, 21213962]

約数ペア:

[(1, 21213962), (2, 10606981), (7, 3030566), (11, 1928542), (14, 1515283), (22, 964271), (49, 432938), (77, 275506), (98, 216469), (121, 175322), (154, 137753), (242, 87661), (539, 39358), (847, 25046), (1078, 19679), (1694, 12523), (1789, 11858), (3578, 5929)]