19996545

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:569

約数の個数: 32

約数和(自身を含む): 33696000

約数和(自身を除く): 13699455

約数列:

[1, 3, 5, 15, 23, 69, 115, 149, 345, 389, 447, 745, 1167, 1945, 2235, 3427, 5835, 8947, 10281, 17135, 26841, 44735, 51405, 57961, 134205, 173883, 289805, 869415, 1333103, 3999309, 6665515, 19996545]

約数ペア:

[(1, 19996545), (3, 6665515), (5, 3999309), (15, 1333103), (23, 869415), (69, 289805), (115, 173883), (149, 134205), (345, 57961), (389, 51405), (447, 44735), (745, 26841), (1167, 17135), (1945, 10281), (2235, 8947), (3427, 5835)]