21840016

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:448

約数の個数: 60

約数和(自身を含む): 48239100

約数和(自身を除く): 26399084

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 44, 58, 88, 116, 121, 176, 232, 242, 319, 389, 464, 484, 638, 778, 968, 1276, 1556, 1936, 2552, 3112, 3509, 4279, 5104, 6224, 7018, 8558, 11281, 14036, 17116, 22562, 28072, 34232, 45124, 47069, 56144, 68464, 90248, 94138, 124091, 180496, 188276, 248182, 376552, 496364, 753104, 992728, 1365001, 1985456, 2730002, 5460004, 10920008, 21840016]

約数ペア:

[(1, 21840016), (2, 10920008), (4, 5460004), (8, 2730002), (11, 1985456), (16, 1365001), (22, 992728), (29, 753104), (44, 496364), (58, 376552), (88, 248182), (116, 188276), (121, 180496), (176, 124091), (232, 94138), (242, 90248), (319, 68464), (389, 56144), (464, 47069), (484, 45124), (638, 34232), (778, 28072), (968, 22562), (1276, 17116), (1556, 14036), (1936, 11281), (2552, 8558), (3112, 7018), (3509, 6224), (4279, 5104)]