18651700

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{71}}^2$

素因数の和:193

約数の個数: 54

約数和(自身を含む): 42161798

約数和(自身を除く): 23510098

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 71, 74, 100, 142, 148, 185, 284, 355, 370, 710, 740, 925, 1420, 1775, 1850, 2627, 3550, 3700, 5041, 5254, 7100, 10082, 10508, 13135, 20164, 25205, 26270, 50410, 52540, 65675, 100820, 126025, 131350, 186517, 252050, 262700, 373034, 504100, 746068, 932585, 1865170, 3730340, 4662925, 9325850, 18651700]

約数ペア:

[(1, 18651700), (2, 9325850), (4, 4662925), (5, 3730340), (10, 1865170), (20, 932585), (25, 746068), (37, 504100), (50, 373034), (71, 262700), (74, 252050), (100, 186517), (142, 131350), (148, 126025), (185, 100820), (284, 65675), (355, 52540), (370, 50410), (710, 26270), (740, 25205), (925, 20164), (1420, 13135), (1775, 10508), (1850, 10082), (2627, 7100), (3550, 5254), (3700, 5041)]