20031739

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:140

約数の個数: 36

約数和(自身を含む): 26286120

約数和(自身を除く): 6254381

約数列:

[1, 7, 13, 41, 49, 59, 91, 169, 287, 413, 533, 637, 767, 1183, 2009, 2419, 2891, 3731, 5369, 6929, 8281, 9971, 16933, 26117, 31447, 37583, 48503, 69797, 118531, 220129, 339521, 408811, 488579, 1540903, 2861677, 20031739]

約数ペア:

[(1, 20031739), (7, 2861677), (13, 1540903), (41, 488579), (49, 408811), (59, 339521), (91, 220129), (169, 118531), (287, 69797), (413, 48503), (533, 37583), (637, 31447), (767, 26117), (1183, 16933), (2009, 9971), (2419, 8281), (2891, 6929), (3731, 5369)]