212823

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:143

約数の個数: 24

約数和(自身を含む): 353808

約数和(自身を除く): 140985

約数列:

[1, 3, 9, 13, 17, 39, 51, 107, 117, 153, 221, 321, 663, 963, 1391, 1819, 1989, 4173, 5457, 12519, 16371, 23647, 70941, 212823]

約数ペア:

[(1, 212823), (3, 70941), (9, 23647), (13, 16371), (17, 12519), (39, 5457), (51, 4173), (107, 1989), (117, 1819), (153, 1391), (221, 963), (321, 663)]