21289128

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:487

約数の個数: 96

約数和(自身を含む): 63502560

約数和(自身を除く): 42213432

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 43, 49, 56, 84, 86, 98, 129, 147, 168, 172, 196, 258, 294, 301, 344, 392, 421, 516, 588, 602, 842, 903, 1032, 1176, 1204, 1263, 1684, 1806, 2107, 2408, 2526, 2947, 3368, 3612, 4214, 5052, 5894, 6321, 7224, 8428, 8841, 10104, 11788, 12642, 16856, 17682, 18103, 20629, 23576, 25284, 35364, 36206, 41258, 50568, 54309, 61887, 70728, 72412, 82516, 108618, 123774, 126721, 144824, 165032, 217236, 247548, 253442, 380163, 434472, 495096, 506884, 760326, 887047, 1013768, 1520652, 1774094, 2661141, 3041304, 3548188, 5322282, 7096376, 10644564, 21289128]

約数ペア:

[(1, 21289128), (2, 10644564), (3, 7096376), (4, 5322282), (6, 3548188), (7, 3041304), (8, 2661141), (12, 1774094), (14, 1520652), (21, 1013768), (24, 887047), (28, 760326), (42, 506884), (43, 495096), (49, 434472), (56, 380163), (84, 253442), (86, 247548), (98, 217236), (129, 165032), (147, 144824), (168, 126721), (172, 123774), (196, 108618), (258, 82516), (294, 72412), (301, 70728), (344, 61887), (392, 54309), (421, 50568), (516, 41258), (588, 36206), (602, 35364), (842, 25284), (903, 23576), (1032, 20629), (1176, 18103), (1204, 17682), (1263, 16856), (1684, 12642), (1806, 11788), (2107, 10104), (2408, 8841), (2526, 8428), (2947, 7224), (3368, 6321), (3612, 5894), (4214, 5052)]