18729381

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 28435968

約数和(自身を除く): 9706587

約数列:

[1, 3, 11, 33, 43, 67, 129, 197, 201, 473, 591, 737, 1419, 2167, 2211, 2881, 6501, 8471, 8643, 13199, 25413, 31691, 39597, 93181, 95073, 145189, 279543, 435567, 567557, 1702671, 6243127, 18729381]

約数ペア:

[(1, 18729381), (3, 6243127), (11, 1702671), (33, 567557), (43, 435567), (67, 279543), (129, 145189), (197, 95073), (201, 93181), (473, 39597), (591, 31691), (737, 25413), (1419, 13199), (2167, 8643), (2211, 8471), (2881, 6501)]