18987925

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6277}}^1$

素因数の和:6309

約数の個数: 18

約数和(自身を含む): 25884194

約数和(自身を除く): 6896269

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6277, 31385, 69047, 156925, 345235, 759517, 1726175, 3797585, 18987925]

約数ペア:

[(1, 18987925), (5, 3797585), (11, 1726175), (25, 759517), (55, 345235), (121, 156925), (275, 69047), (605, 31385), (3025, 6277)]