20768727

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 33292800

約数和(自身を除く): 12524073

約数列:

[1, 3, 7, 21, 29, 67, 87, 201, 203, 469, 509, 609, 1407, 1527, 1943, 3563, 5829, 10689, 13601, 14761, 34103, 40803, 44283, 102309, 103327, 238721, 309981, 716163, 988987, 2966961, 6922909, 20768727]

約数ペア:

[(1, 20768727), (3, 6922909), (7, 2966961), (21, 988987), (29, 716163), (67, 309981), (87, 238721), (201, 103327), (203, 102309), (469, 44283), (509, 40803), (609, 34103), (1407, 14761), (1527, 13601), (1943, 10689), (3563, 5829)]