21054495

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18229}}^1$

素因数の和:18255

約数の個数: 32

約数和(自身を含む): 42001920

約数和(自身を除く): 20947425

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18229, 54687, 91145, 127603, 200519, 273435, 382809, 601557, 638015, 1002595, 1403633, 1914045, 3007785, 4210899, 7018165, 21054495]

約数ペア:

[(1, 21054495), (3, 7018165), (5, 4210899), (7, 3007785), (11, 1914045), (15, 1403633), (21, 1002595), (33, 638015), (35, 601557), (55, 382809), (77, 273435), (105, 200519), (165, 127603), (231, 91145), (385, 54687), (1155, 18229)]