20953863

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3823}}^1$

素因数の和:3868

約数の個数: 32

約数和(自身を含む): 36710400

約数和(自身を除く): 15756537

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3823, 5481, 11469, 26761, 34407, 80283, 103221, 110867, 240849, 332601, 722547, 776069, 997803, 2328207, 2993409, 6984621, 20953863]

約数ペア:

[(1, 20953863), (3, 6984621), (7, 2993409), (9, 2328207), (21, 997803), (27, 776069), (29, 722547), (63, 332601), (87, 240849), (189, 110867), (203, 103221), (261, 80283), (609, 34407), (783, 26761), (1827, 11469), (3823, 5481)]