18723850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:427

約数の個数: 48

約数和(自身を含む): 37107000

約数和(自身を除く): 18383150

約数列:

[1, 2, 5, 10, 25, 29, 37, 50, 58, 74, 145, 185, 290, 349, 370, 698, 725, 925, 1073, 1450, 1745, 1850, 2146, 3490, 5365, 8725, 10121, 10730, 12913, 17450, 20242, 25826, 26825, 50605, 53650, 64565, 101210, 129130, 253025, 322825, 374477, 506050, 645650, 748954, 1872385, 3744770, 9361925, 18723850]

約数ペア:

[(1, 18723850), (2, 9361925), (5, 3744770), (10, 1872385), (25, 748954), (29, 645650), (37, 506050), (50, 374477), (58, 322825), (74, 253025), (145, 129130), (185, 101210), (290, 64565), (349, 53650), (370, 50605), (698, 26825), (725, 25826), (925, 20242), (1073, 17450), (1450, 12913), (1745, 10730), (1850, 10121), (2146, 8725), (3490, 5365)]