18756140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72139}}^1$

素因数の和:72161

約数の個数: 24

約数和(自身を含む): 42418320

約数和(自身を除く): 23662180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72139, 144278, 288556, 360695, 721390, 937807, 1442780, 1875614, 3751228, 4689035, 9378070, 18756140]

約数ペア:

[(1, 18756140), (2, 9378070), (4, 4689035), (5, 3751228), (10, 1875614), (13, 1442780), (20, 937807), (26, 721390), (52, 360695), (65, 288556), (130, 144278), (260, 72139)]