19808180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{937}}^1$

素因数の和:1104

約数の個数: 48

約数和(自身を含む): 47905536

約数和(自身を除く): 28097356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151, 302, 604, 755, 937, 1057, 1510, 1874, 2114, 3020, 3748, 4228, 4685, 5285, 6559, 9370, 10570, 13118, 18740, 21140, 26236, 32795, 65590, 131180, 141487, 282974, 565948, 707435, 990409, 1414870, 1980818, 2829740, 3961636, 4952045, 9904090, 19808180]

約数ペア:

[(1, 19808180), (2, 9904090), (4, 4952045), (5, 3961636), (7, 2829740), (10, 1980818), (14, 1414870), (20, 990409), (28, 707435), (35, 565948), (70, 282974), (140, 141487), (151, 131180), (302, 65590), (604, 32795), (755, 26236), (937, 21140), (1057, 18740), (1510, 13118), (1874, 10570), (2114, 9370), (3020, 6559), (3748, 5285), (4228, 4685)]