21435687

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3739}}^1$

素因数の和:3772

約数の個数: 36

約数和(自身を含む): 38798760

約数和(自身を除く): 17363073

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3739, 5733, 11217, 26173, 33651, 48607, 78519, 145821, 183211, 235557, 340249, 437463, 549633, 1020747, 1648899, 2381743, 3062241, 7145229, 21435687]

約数ペア:

[(1, 21435687), (3, 7145229), (7, 3062241), (9, 2381743), (13, 1648899), (21, 1020747), (39, 549633), (49, 437463), (63, 340249), (91, 235557), (117, 183211), (147, 145821), (273, 78519), (441, 48607), (637, 33651), (819, 26173), (1911, 11217), (3739, 5733)]