208989925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{1409}}^1$

素因数の和:1785

約数の個数: 24

約数和(自身を含む): 275373000

約数和(自身を除く): 66383075

約数列:

[1, 5, 17, 25, 85, 349, 425, 1409, 1745, 5933, 7045, 8725, 23953, 29665, 35225, 119765, 148325, 491741, 598825, 2458705, 8359597, 12293525, 41797985, 208989925]

約数ペア:

[(1, 208989925), (5, 41797985), (17, 12293525), (25, 8359597), (85, 2458705), (349, 598825), (425, 491741), (1409, 148325), (1745, 119765), (5933, 35225), (7045, 29665), (8725, 23953)]