20005461

素因数分解:

$3^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{619}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 36108800

約数和(自身を除く): 16103339

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 243, 399, 513, 567, 619, 1197, 1539, 1701, 1857, 3591, 4333, 4617, 5571, 10773, 11761, 12999, 16713, 32319, 35283, 38997, 50139, 82327, 105849, 116991, 150417, 246981, 317547, 350973, 740943, 952641, 1052919, 2222829, 2857923, 6668487, 20005461]

約数ペア:

[(1, 20005461), (3, 6668487), (7, 2857923), (9, 2222829), (19, 1052919), (21, 952641), (27, 740943), (57, 350973), (63, 317547), (81, 246981), (133, 150417), (171, 116991), (189, 105849), (243, 82327), (399, 50139), (513, 38997), (567, 35283), (619, 32319), (1197, 16713), (1539, 12999), (1701, 11761), (1857, 10773), (3591, 5571), (4333, 4617)]