18780465

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2647}}^1$

素因数の和:2709

約数の個数: 32

約数和(自身を含む): 33555456

約数和(自身を除く): 14774991

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 129, 165, 215, 473, 645, 1419, 2365, 2647, 7095, 7941, 13235, 29117, 39705, 87351, 113821, 145585, 341463, 436755, 569105, 1252031, 1707315, 3756093, 6260155, 18780465]

約数ペア:

[(1, 18780465), (3, 6260155), (5, 3756093), (11, 1707315), (15, 1252031), (33, 569105), (43, 436755), (55, 341463), (129, 145585), (165, 113821), (215, 87351), (473, 39705), (645, 29117), (1419, 13235), (2365, 7941), (2647, 7095)]