858336740

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{87407}}^1$

素因数の和:87907

約数の個数: 24

約数和(自身を含む): 1806198912

約数和(自身を除く): 947862172

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 87407, 174814, 349628, 437035, 874070, 1748140, 42916837, 85833674, 171667348, 214584185, 429168370, 858336740]

約数ペア:

[(1, 858336740), (2, 429168370), (4, 214584185), (5, 171667348), (10, 85833674), (20, 42916837), (491, 1748140), (982, 874070), (1964, 437035), (2455, 349628), (4910, 174814), (9820, 87407)]