20542785

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19289}}^1$

素因数の和:19368

約数の個数: 16

約数和(自身を含む): 33333120

約数和(自身を除く): 12790335

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19289, 57867, 96445, 289335, 1369519, 4108557, 6847595, 20542785]

約数ペア:

[(1, 20542785), (3, 6847595), (5, 4108557), (15, 1369519), (71, 289335), (213, 96445), (355, 57867), (1065, 19289)]