208511457

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{4987}}^1$

素因数の和:5189

約数の個数: 32

約数和(自身を含む): 348601344

約数和(自身を除く): 140089887

約数列:

[1, 3, 7, 11, 21, 33, 77, 181, 231, 543, 1267, 1991, 3801, 4987, 5973, 13937, 14961, 34909, 41811, 54857, 104727, 164571, 383999, 902647, 1151997, 2707941, 6318529, 9929117, 18955587, 29787351, 69503819, 208511457]

約数ペア:

[(1, 208511457), (3, 69503819), (7, 29787351), (11, 18955587), (21, 9929117), (33, 6318529), (77, 2707941), (181, 1151997), (231, 902647), (543, 383999), (1267, 164571), (1991, 104727), (3801, 54857), (4987, 41811), (5973, 34909), (13937, 14961)]