213915505

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{28277}}^1$

素因数の和:28388

約数の個数: 16

約数和(自身を含む): 274862160

約数和(自身を除く): 60946655

約数列:

[1, 5, 17, 85, 89, 445, 1513, 7565, 28277, 141385, 480709, 2403545, 2516653, 12583265, 42783101, 213915505]

約数ペア:

[(1, 213915505), (5, 42783101), (17, 12583265), (85, 2516653), (89, 2403545), (445, 480709), (1513, 141385), (7565, 28277)]