1987895

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 3120768

約数和(自身を除く): 1132873

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 221, 257, 455, 595, 1105, 1285, 1547, 1799, 3341, 4369, 7735, 8995, 16705, 21845, 23387, 30583, 56797, 116935, 152915, 283985, 397579, 1987895]

約数ペア:

[(1, 1987895), (5, 397579), (7, 283985), (13, 152915), (17, 116935), (35, 56797), (65, 30583), (85, 23387), (91, 21845), (119, 16705), (221, 8995), (257, 7735), (455, 4369), (595, 3341), (1105, 1799), (1285, 1547)]