254218420

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{123407}}^1$

素因数の和:123519

約数の個数: 24

約数和(自身を含む): 539046144

約数和(自身を除く): 284827724

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 123407, 246814, 493628, 617035, 1234070, 2468140, 12710921, 25421842, 50843684, 63554605, 127109210, 254218420]

約数ペア:

[(1, 254218420), (2, 127109210), (4, 63554605), (5, 50843684), (10, 25421842), (20, 12710921), (103, 2468140), (206, 1234070), (412, 617035), (515, 493628), (1030, 246814), (2060, 123407)]