81542128

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{40129}}^1$

素因数の和:40264

約数の個数: 20

約数和(自身を含む): 159235840

約数和(自身を除く): 77693712

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 40129, 80258, 160516, 321032, 642064, 5096383, 10192766, 20385532, 40771064, 81542128]

約数ペア:

[(1, 81542128), (2, 40771064), (4, 20385532), (8, 10192766), (16, 5096383), (127, 642064), (254, 321032), (508, 160516), (1016, 80258), (2032, 40129)]