21335256

素因数分解:

$2^3\times 3^2\times {\mathrm{53}}^1\times {\mathrm{5591}}^1$

素因数の和:5656

約数の個数: 48

約数和(自身を含む): 58883760

約数和(自身を除く): 37548504

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 53, 72, 106, 159, 212, 318, 424, 477, 636, 954, 1272, 1908, 3816, 5591, 11182, 16773, 22364, 33546, 44728, 50319, 67092, 100638, 134184, 201276, 296323, 402552, 592646, 888969, 1185292, 1777938, 2370584, 2666907, 3555876, 5333814, 7111752, 10667628, 21335256]

約数ペア:

[(1, 21335256), (2, 10667628), (3, 7111752), (4, 5333814), (6, 3555876), (8, 2666907), (9, 2370584), (12, 1777938), (18, 1185292), (24, 888969), (36, 592646), (53, 402552), (72, 296323), (106, 201276), (159, 134184), (212, 100638), (318, 67092), (424, 50319), (477, 44728), (636, 33546), (954, 22364), (1272, 16773), (1908, 11182), (3816, 5591)]