21665168

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10181}}^1$

素因数の和:10215

約数の個数: 40

約数和(自身を含む): 50502720

約数和(自身を除く): 28837552

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 10181, 20362, 40724, 71267, 81448, 142534, 162896, 193439, 285068, 386878, 570136, 773756, 1140272, 1354073, 1547512, 2708146, 3095024, 5416292, 10832584, 21665168]

約数ペア:

[(1, 21665168), (2, 10832584), (4, 5416292), (7, 3095024), (8, 2708146), (14, 1547512), (16, 1354073), (19, 1140272), (28, 773756), (38, 570136), (56, 386878), (76, 285068), (112, 193439), (133, 162896), (152, 142534), (266, 81448), (304, 71267), (532, 40724), (1064, 20362), (2128, 10181)]