18861423

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4139}}^1$

素因数の和:4187

約数の個数: 24

約数和(自身を含む): 30205440

約数和(自身を除く): 11344017

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4139, 4557, 12417, 28973, 86919, 128309, 202811, 384927, 608433, 898163, 2694489, 6287141, 18861423]

約数ペア:

[(1, 18861423), (3, 6287141), (7, 2694489), (21, 898163), (31, 608433), (49, 384927), (93, 202811), (147, 128309), (217, 86919), (651, 28973), (1519, 12417), (4139, 4557)]