20188584560

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{562043}}^1$

素因数の和:562505

約数の個数: 40

約数和(自身を含む): 47043082800

約数和(自身を除く): 26854498240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 898, 1796, 2245, 3592, 4490, 7184, 8980, 17960, 35920, 562043, 1124086, 2248172, 2810215, 4496344, 5620430, 8992688, 11240860, 22481720, 44963440, 252357307, 504714614, 1009429228, 1261786535, 2018858456, 2523573070, 4037716912, 5047146140, 10094292280, 20188584560]

約数ペア:

[(1, 20188584560), (2, 10094292280), (4, 5047146140), (5, 4037716912), (8, 2523573070), (10, 2018858456), (16, 1261786535), (20, 1009429228), (40, 504714614), (80, 252357307), (449, 44963440), (898, 22481720), (1796, 11240860), (2245, 8992688), (3592, 5620430), (4490, 4496344), (7184, 2810215), (8980, 2248172), (17960, 1124086), (35920, 562043)]