18897219

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{167}}^1$

素因数の和:317

約数の個数: 40

約数和(自身を含む): 31223808

約数和(自身を除く): 12326589

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 127, 167, 297, 381, 501, 891, 1143, 1397, 1503, 1837, 3429, 4191, 4509, 5511, 10287, 12573, 13527, 16533, 21209, 37719, 49599, 63627, 113157, 148797, 190881, 233299, 572643, 699897, 1717929, 2099691, 6299073, 18897219]

約数ペア:

[(1, 18897219), (3, 6299073), (9, 2099691), (11, 1717929), (27, 699897), (33, 572643), (81, 233299), (99, 190881), (127, 148797), (167, 113157), (297, 63627), (381, 49599), (501, 37719), (891, 21209), (1143, 16533), (1397, 13527), (1503, 12573), (1837, 10287), (3429, 5511), (4191, 4509)]