289238420

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{140407}}^1$

素因数の和:140519

約数の個数: 24

約数和(自身を含む): 613302144

約数和(自身を除く): 324063724

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 140407, 280814, 561628, 702035, 1404070, 2808140, 14461921, 28923842, 57847684, 72309605, 144619210, 289238420]

約数ペア:

[(1, 289238420), (2, 144619210), (4, 72309605), (5, 57847684), (10, 28923842), (20, 14461921), (103, 2808140), (206, 1404070), (412, 702035), (515, 561628), (1030, 280814), (2060, 140407)]