18403979

素因数分解:

${\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 22407840

約数和(自身を除く): 4003861

約数列:

[1, 11, 17, 23, 121, 187, 253, 389, 391, 2057, 2783, 4279, 4301, 6613, 8947, 47069, 47311, 72743, 98417, 152099, 800173, 1082587, 1673089, 18403979]

約数ペア:

[(1, 18403979), (11, 1673089), (17, 1082587), (23, 800173), (121, 152099), (187, 98417), (253, 72743), (389, 47311), (391, 47069), (2057, 8947), (2783, 6613), (4279, 4301)]