21078477

素因数分解:

$3^2\times 7^2\times {\mathrm{47797}}^1$

素因数の和:47817

約数の個数: 18

約数和(自身を含む): 35418318

約数和(自身を除く): 14339841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 47797, 143391, 334579, 430173, 1003737, 2342053, 3011211, 7026159, 21078477]

約数ペア:

[(1, 21078477), (3, 7026159), (7, 3011211), (9, 2342053), (21, 1003737), (49, 430173), (63, 334579), (147, 143391), (441, 47797)]