681760

素因数分解:

$2^5\times 5^1\times {\mathrm{4261}}^1$

素因数の和:4276

約数の個数: 24

約数和(自身を含む): 1611036

約数和(自身を除く): 929276

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 4261, 8522, 17044, 21305, 34088, 42610, 68176, 85220, 136352, 170440, 340880, 681760]

約数ペア:

[(1, 681760), (2, 340880), (4, 170440), (5, 136352), (8, 85220), (10, 68176), (16, 42610), (20, 34088), (32, 21305), (40, 17044), (80, 8522), (160, 4261)]