16987025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 23165184

約数和(自身を除く): 6178159

約数列:

[1, 5, 11, 25, 55, 223, 275, 277, 1115, 1385, 2453, 3047, 5575, 6925, 12265, 15235, 61325, 61771, 76175, 308855, 679481, 1544275, 3397405, 16987025]

約数ペア:

[(1, 16987025), (5, 3397405), (11, 1544275), (25, 679481), (55, 308855), (223, 76175), (275, 61771), (277, 61325), (1115, 15235), (1385, 12265), (2453, 6925), (3047, 5575)]