215120

素因数分解:

$2^4\times 5^1\times {\mathrm{2689}}^1$

素因数の和:2702

約数の個数: 20

約数和(自身を含む): 500340

約数和(自身を除く): 285220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2689, 5378, 10756, 13445, 21512, 26890, 43024, 53780, 107560, 215120]

約数ペア:

[(1, 215120), (2, 107560), (4, 53780), (5, 43024), (8, 26890), (10, 21512), (16, 13445), (20, 10756), (40, 5378), (80, 2689)]