161728225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{859}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 213066720

約数和(自身を除く): 51338495

約数列:

[1, 5, 17, 25, 85, 425, 443, 859, 2215, 4295, 7531, 11075, 14603, 21475, 37655, 73015, 188275, 365075, 380537, 1902685, 6469129, 9513425, 32345645, 161728225]

約数ペア:

[(1, 161728225), (5, 32345645), (17, 9513425), (25, 6469129), (85, 1902685), (425, 380537), (443, 365075), (859, 188275), (2215, 73015), (4295, 37655), (7531, 21475), (11075, 14603)]