80078420

素因数分解:

$2^2\times 5^1\times {\mathrm{1489}}^1\times {\mathrm{2689}}^1$

素因数の和:4187

約数の個数: 24

約数和(自身を含む): 168340200

約数和(自身を除く): 88261780

約数列:

[1, 2, 4, 5, 10, 20, 1489, 2689, 2978, 5378, 5956, 7445, 10756, 13445, 14890, 26890, 29780, 53780, 4003921, 8007842, 16015684, 20019605, 40039210, 80078420]

約数ペア:

[(1, 80078420), (2, 40039210), (4, 20019605), (5, 16015684), (10, 8007842), (20, 4003921), (1489, 53780), (2689, 29780), (2978, 26890), (5378, 14890), (5956, 13445), (7445, 10756)]