8641880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{16619}}^1$

素因数の和:16643

約数の個数: 32

約数和(自身を含む): 20941200

約数和(自身を除く): 12299320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 16619, 33238, 66476, 83095, 132952, 166190, 216047, 332380, 432094, 664760, 864188, 1080235, 1728376, 2160470, 4320940, 8641880]

約数ペア:

[(1, 8641880), (2, 4320940), (4, 2160470), (5, 1728376), (8, 1080235), (10, 864188), (13, 664760), (20, 432094), (26, 332380), (40, 216047), (52, 166190), (65, 132952), (104, 83095), (130, 66476), (260, 33238), (520, 16619)]