78885760

素因数分解:

$2^7\times 5^1\times {\mathrm{123259}}^1$

素因数の和:123278

約数の個数: 32

約数和(自身を含む): 188587800

約数和(自身を除く): 109702040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 123259, 246518, 493036, 616295, 986072, 1232590, 1972144, 2465180, 3944288, 4930360, 7888576, 9860720, 15777152, 19721440, 39442880, 78885760]

約数ペア:

[(1, 78885760), (2, 39442880), (4, 19721440), (5, 15777152), (8, 9860720), (10, 7888576), (16, 4930360), (20, 3944288), (32, 2465180), (40, 1972144), (64, 1232590), (80, 986072), (128, 616295), (160, 493036), (320, 246518), (640, 123259)]