21020468

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{15973}}^1$

素因数の和:16031

約数の個数: 24

約数和(自身を含む): 42938112

約数和(自身を除く): 21917644

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 15973, 31946, 63892, 111811, 223622, 447244, 750731, 1501462, 3002924, 5255117, 10510234, 21020468]

約数ペア:

[(1, 21020468), (2, 10510234), (4, 5255117), (7, 3002924), (14, 1501462), (28, 750731), (47, 447244), (94, 223622), (188, 111811), (329, 63892), (658, 31946), (1316, 15973)]