81243656

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{2213}}^1$

素因数の和:2585

約数の個数: 32

約数和(自身を含む): 164588760

約数和(自身を除く): 83345104

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 353, 706, 1412, 2213, 2824, 4426, 4589, 8852, 9178, 17704, 18356, 28769, 36712, 57538, 115076, 230152, 781189, 1562378, 3124756, 6249512, 10155457, 20310914, 40621828, 81243656]

約数ペア:

[(1, 81243656), (2, 40621828), (4, 20310914), (8, 10155457), (13, 6249512), (26, 3124756), (52, 1562378), (104, 781189), (353, 230152), (706, 115076), (1412, 57538), (2213, 36712), (2824, 28769), (4426, 18356), (4589, 17704), (8852, 9178)]