21181849

素因数分解:

${\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:456

約数の個数: 16

約数和(自身を含む): 23510592

約数和(自身を除く): 2328743

約数列:

[1, 13, 67, 83, 293, 871, 1079, 3809, 5561, 19631, 24319, 72293, 255203, 316147, 1629373, 21181849]

約数ペア:

[(1, 21181849), (13, 1629373), (67, 316147), (83, 255203), (293, 72293), (871, 24319), (1079, 19631), (3809, 5561)]