21556782

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5419}}^1$

素因数の和:5457

約数の個数: 48

約数和(自身を含む): 53267760

約数和(自身を除く): 31710978

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5419, 10838, 16257, 32514, 48771, 70447, 92123, 97542, 140894, 184246, 211341, 276369, 422682, 552738, 634023, 829107, 1197599, 1268046, 1658214, 2395198, 3592797, 7185594, 10778391, 21556782]

約数ペア:

[(1, 21556782), (2, 10778391), (3, 7185594), (6, 3592797), (9, 2395198), (13, 1658214), (17, 1268046), (18, 1197599), (26, 829107), (34, 634023), (39, 552738), (51, 422682), (78, 276369), (102, 211341), (117, 184246), (153, 140894), (221, 97542), (234, 92123), (306, 70447), (442, 48771), (663, 32514), (1326, 16257), (1989, 10838), (3978, 5419)]