21287556

素因数分解:

$2^2\times 3^3\times {\mathrm{53}}^1\times {\mathrm{3719}}^1$

素因数の和:3785

約数の個数: 48

約数和(自身を含む): 56246400

約数和(自身を除く): 34958844

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 53, 54, 106, 108, 159, 212, 318, 477, 636, 954, 1431, 1908, 2862, 3719, 5724, 7438, 11157, 14876, 22314, 33471, 44628, 66942, 100413, 133884, 197107, 200826, 394214, 401652, 591321, 788428, 1182642, 1773963, 2365284, 3547926, 5321889, 7095852, 10643778, 21287556]

約数ペア:

[(1, 21287556), (2, 10643778), (3, 7095852), (4, 5321889), (6, 3547926), (9, 2365284), (12, 1773963), (18, 1182642), (27, 788428), (36, 591321), (53, 401652), (54, 394214), (106, 200826), (108, 197107), (159, 133884), (212, 100413), (318, 66942), (477, 44628), (636, 33471), (954, 22314), (1431, 14876), (1908, 11157), (2862, 7438), (3719, 5724)]