20917347

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{457}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 32536320

約数和(自身を除く): 11618973

約数列:

[1, 3, 11, 19, 33, 57, 73, 209, 219, 457, 627, 803, 1371, 1387, 2409, 4161, 5027, 8683, 15081, 15257, 26049, 33361, 45771, 95513, 100083, 286539, 366971, 633859, 1100913, 1901577, 6972449, 20917347]

約数ペア:

[(1, 20917347), (3, 6972449), (11, 1901577), (19, 1100913), (33, 633859), (57, 366971), (73, 286539), (209, 100083), (219, 95513), (457, 45771), (627, 33361), (803, 26049), (1371, 15257), (1387, 15081), (2409, 8683), (4161, 5027)]