21440272

素因数分解:

$2^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4073}}^1$

素因数の和:4135

約数の個数: 40

約数和(自身を含む): 48496896

約数和(自身を除く): 27056624

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 47, 56, 94, 112, 188, 329, 376, 658, 752, 1316, 2632, 4073, 5264, 8146, 16292, 28511, 32584, 57022, 65168, 114044, 191431, 228088, 382862, 456176, 765724, 1340017, 1531448, 2680034, 3062896, 5360068, 10720136, 21440272]

約数ペア:

[(1, 21440272), (2, 10720136), (4, 5360068), (7, 3062896), (8, 2680034), (14, 1531448), (16, 1340017), (28, 765724), (47, 456176), (56, 382862), (94, 228088), (112, 191431), (188, 114044), (329, 65168), (376, 57022), (658, 32584), (752, 28511), (1316, 16292), (2632, 8146), (4073, 5264)]