19915275

素因数分解:

$3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{2027}}^1$

素因数の和:2171

約数の個数: 24

約数和(自身を含む): 33194304

約数和(自身を除く): 13279029

約数列:

[1, 3, 5, 15, 25, 75, 131, 393, 655, 1965, 2027, 3275, 6081, 9825, 10135, 30405, 50675, 152025, 265537, 796611, 1327685, 3983055, 6638425, 19915275]

約数ペア:

[(1, 19915275), (3, 6638425), (5, 3983055), (15, 1327685), (25, 796611), (75, 265537), (131, 152025), (393, 50675), (655, 30405), (1965, 10135), (2027, 9825), (3275, 6081)]