21667833

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{197}}^1$

素因数の和:326

約数の個数: 36

約数和(自身を含む): 34918884

約数和(自身を除く): 13251051

約数列:

[1, 3, 9, 11, 33, 99, 101, 121, 197, 303, 363, 591, 909, 1089, 1111, 1773, 2167, 3333, 6501, 9999, 12221, 19503, 19897, 23837, 36663, 59691, 71511, 109989, 179073, 214533, 218867, 656601, 1969803, 2407537, 7222611, 21667833]

約数ペア:

[(1, 21667833), (3, 7222611), (9, 2407537), (11, 1969803), (33, 656601), (99, 218867), (101, 214533), (121, 179073), (197, 109989), (303, 71511), (363, 59691), (591, 36663), (909, 23837), (1089, 19897), (1111, 19503), (1773, 12221), (2167, 9999), (3333, 6501)]