21769137

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4327}}^1$

素因数の和:4389

約数の個数: 24

約数和(自身を含む): 34658624

約数和(自身を除く): 12889487

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 4327, 5031, 12981, 38943, 56251, 168753, 186061, 506259, 558183, 1674549, 2418793, 7256379, 21769137]

約数ペア:

[(1, 21769137), (3, 7256379), (9, 2418793), (13, 1674549), (39, 558183), (43, 506259), (117, 186061), (129, 168753), (387, 56251), (559, 38943), (1677, 12981), (4327, 5031)]