199805291

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{577}}^1$

素因数の和:819

約数の個数: 24

約数和(自身を含む): 240374016

約数和(自身を除く): 40568725

約数列:

[1, 7, 37, 49, 191, 259, 577, 1337, 1813, 4039, 7067, 9359, 21349, 28273, 49469, 110207, 149443, 346283, 771449, 1046101, 4077659, 5400143, 28543613, 199805291]

約数ペア:

[(1, 199805291), (7, 28543613), (37, 5400143), (49, 4077659), (191, 1046101), (259, 771449), (577, 346283), (1337, 149443), (1813, 110207), (4039, 49469), (7067, 28273), (9359, 21349)]