17920959

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 28409856

約数和(自身を除く): 10488897

約数列:

[1, 3, 7, 21, 47, 67, 141, 201, 271, 329, 469, 813, 987, 1407, 1897, 3149, 5691, 9447, 12737, 18157, 22043, 38211, 54471, 66129, 89159, 127099, 267477, 381297, 853379, 2560137, 5973653, 17920959]

約数ペア:

[(1, 17920959), (3, 5973653), (7, 2560137), (21, 853379), (47, 381297), (67, 267477), (141, 127099), (201, 89159), (271, 66129), (329, 54471), (469, 38211), (813, 22043), (987, 18157), (1407, 12737), (1897, 9447), (3149, 5691)]