138775475

素因数分解:

$5^2\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{643}}^1$

素因数の和:839

約数の個数: 24

約数和(自身を含む): 176082480

約数和(自身を除く): 37307005

約数列:

[1, 5, 25, 89, 97, 445, 485, 643, 2225, 2425, 3215, 8633, 16075, 43165, 57227, 62371, 215825, 286135, 311855, 1430675, 1559275, 5551019, 27755095, 138775475]

約数ペア:

[(1, 138775475), (5, 27755095), (25, 5551019), (89, 1559275), (97, 1430675), (445, 311855), (485, 286135), (643, 215825), (2225, 62371), (2425, 57227), (3215, 43165), (8633, 16075)]