28729820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205213}}^1$

素因数の和:205229

約数の個数: 24

約数和(自身を含む): 68951904

約数和(自身を除く): 40222084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205213, 410426, 820852, 1026065, 1436491, 2052130, 2872982, 4104260, 5745964, 7182455, 14364910, 28729820]

約数ペア:

[(1, 28729820), (2, 14364910), (4, 7182455), (5, 5745964), (7, 4104260), (10, 2872982), (14, 2052130), (20, 1436491), (28, 1026065), (35, 820852), (70, 410426), (140, 205213)]