69986680

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2647}}^1$

素因数の和:3319

約数の個数: 32

約数和(自身を含む): 157767840

約数和(自身を除く): 87781160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 2647, 3305, 5288, 5294, 6610, 10588, 13220, 13235, 21176, 26440, 26470, 52940, 105880, 1749667, 3499334, 6998668, 8748335, 13997336, 17496670, 34993340, 69986680]

約数ペア:

[(1, 69986680), (2, 34993340), (4, 17496670), (5, 13997336), (8, 8748335), (10, 6998668), (20, 3499334), (40, 1749667), (661, 105880), (1322, 52940), (2644, 26470), (2647, 26440), (3305, 21176), (5288, 13235), (5294, 13220), (6610, 10588)]