20605928

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7829}}^1$

素因数の和:7889

約数の個数: 32

約数和(自身を含む): 45100800

約数和(自身を除く): 24494872

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 7829, 15658, 31316, 54803, 62632, 109606, 219212, 367963, 438424, 735926, 1471852, 2575741, 2943704, 5151482, 10302964, 20605928]

約数ペア:

[(1, 20605928), (2, 10302964), (4, 5151482), (7, 2943704), (8, 2575741), (14, 1471852), (28, 735926), (47, 438424), (56, 367963), (94, 219212), (188, 109606), (329, 62632), (376, 54803), (658, 31316), (1316, 15658), (2632, 7829)]