20355512

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1259}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19561288

約数列:

[1, 2, 4, 8, 43, 47, 86, 94, 172, 188, 344, 376, 1259, 2021, 2518, 4042, 5036, 8084, 10072, 16168, 54137, 59173, 108274, 118346, 216548, 236692, 433096, 473384, 2544439, 5088878, 10177756, 20355512]

約数ペア:

[(1, 20355512), (2, 10177756), (4, 5088878), (8, 2544439), (43, 473384), (47, 433096), (86, 236692), (94, 216548), (172, 118346), (188, 108274), (344, 59173), (376, 54137), (1259, 16168), (2021, 10072), (2518, 8084), (4042, 5036)]