290215478

素因数分解:

$2^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1\times {\mathrm{643}}^1$

素因数の和:1068

約数の個数: 32

約数和(自身を含む): 504731136

約数和(自身を除く): 214515658

約数列:

[1, 2, 7, 14, 103, 206, 313, 626, 643, 721, 1286, 1442, 2191, 4382, 4501, 9002, 32239, 64478, 66229, 132458, 201259, 225673, 402518, 451346, 463603, 927206, 1408813, 2817626, 20729677, 41459354, 145107739, 290215478]

約数ペア:

[(1, 290215478), (2, 145107739), (7, 41459354), (14, 20729677), (103, 2817626), (206, 1408813), (313, 927206), (626, 463603), (643, 451346), (721, 402518), (1286, 225673), (1442, 201259), (2191, 132458), (4382, 66229), (4501, 64478), (9002, 32239)]