20185893

素因数分解:

$3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{503}}^1$

素因数の和:543

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 16505307

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 343, 441, 503, 637, 819, 1029, 1509, 1911, 3087, 3521, 4459, 4527, 5733, 6539, 10563, 13377, 19617, 24647, 31689, 40131, 45773, 58851, 73941, 137319, 172529, 221823, 320411, 411957, 517587, 961233, 1552761, 2242877, 2883699, 6728631, 20185893]

約数ペア:

[(1, 20185893), (3, 6728631), (7, 2883699), (9, 2242877), (13, 1552761), (21, 961233), (39, 517587), (49, 411957), (63, 320411), (91, 221823), (117, 172529), (147, 137319), (273, 73941), (343, 58851), (441, 45773), (503, 40131), (637, 31689), (819, 24647), (1029, 19617), (1509, 13377), (1911, 10563), (3087, 6539), (3521, 5733), (4459, 4527)]