18205121075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{639337}}^1$

素因数の和:639431

約数の個数: 24

約数和(自身を含む): 24259041072

約数和(自身を除く): 6053919997

約数列:

[1, 5, 17, 25, 67, 85, 335, 425, 1139, 1675, 5695, 28475, 639337, 3196685, 10868729, 15983425, 42835579, 54343645, 214177895, 271718225, 728204843, 1070889475, 3641024215, 18205121075]

約数ペア:

[(1, 18205121075), (5, 3641024215), (17, 1070889475), (25, 728204843), (67, 271718225), (85, 214177895), (335, 54343645), (425, 42835579), (1139, 15983425), (1675, 10868729), (5695, 3196685), (28475, 639337)]