19958323

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 26818560

約数和(自身を除く): 6860237

約数列:

[1, 7, 11, 17, 77, 79, 119, 187, 193, 553, 869, 1309, 1343, 1351, 2123, 3281, 6083, 9401, 14773, 14861, 15247, 22967, 36091, 103411, 106729, 167717, 252637, 259199, 1174019, 1814393, 2851189, 19958323]

約数ペア:

[(1, 19958323), (7, 2851189), (11, 1814393), (17, 1174019), (77, 259199), (79, 252637), (119, 167717), (187, 106729), (193, 103411), (553, 36091), (869, 22967), (1309, 15247), (1343, 14861), (1351, 14773), (2123, 9401), (3281, 6083)]