20784918

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{6427}}^1$

素因数の和:6457

約数の個数: 48

約数和(自身を含む): 52761024

約数和(自身を除く): 31976106

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 49, 66, 77, 98, 147, 154, 231, 294, 462, 539, 1078, 1617, 3234, 6427, 12854, 19281, 38562, 44989, 70697, 89978, 134967, 141394, 212091, 269934, 314923, 424182, 494879, 629846, 944769, 989758, 1484637, 1889538, 2969274, 3464153, 6928306, 10392459, 20784918]

約数ペア:

[(1, 20784918), (2, 10392459), (3, 6928306), (6, 3464153), (7, 2969274), (11, 1889538), (14, 1484637), (21, 989758), (22, 944769), (33, 629846), (42, 494879), (49, 424182), (66, 314923), (77, 269934), (98, 212091), (147, 141394), (154, 134967), (231, 89978), (294, 70697), (462, 44989), (539, 38562), (1078, 19281), (1617, 12854), (3234, 6427)]