28057428

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:251

約数の個数: 120

約数和(自身を含む): 85377600

約数和(自身を除く): 57320172

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 89, 108, 126, 139, 162, 178, 189, 252, 267, 278, 324, 356, 378, 417, 534, 556, 567, 623, 756, 801, 834, 973, 1068, 1134, 1246, 1251, 1602, 1668, 1869, 1946, 2268, 2403, 2492, 2502, 2919, 3204, 3738, 3753, 3892, 4806, 5004, 5607, 5838, 7209, 7476, 7506, 8757, 9612, 11214, 11259, 11676, 12371, 14418, 15012, 16821, 17514, 22428, 22518, 24742, 26271, 28836, 33642, 35028, 37113, 45036, 49484, 50463, 52542, 67284, 74226, 78813, 86597, 100926, 105084, 111339, 148452, 157626, 173194, 201852, 222678, 259791, 315252, 334017, 346388, 445356, 519582, 668034, 779373, 1002051, 1039164, 1336068, 1558746, 2004102, 2338119, 3117492, 4008204, 4676238, 7014357, 9352476, 14028714, 28057428]

約数ペア:

[(1, 28057428), (2, 14028714), (3, 9352476), (4, 7014357), (6, 4676238), (7, 4008204), (9, 3117492), (12, 2338119), (14, 2004102), (18, 1558746), (21, 1336068), (27, 1039164), (28, 1002051), (36, 779373), (42, 668034), (54, 519582), (63, 445356), (81, 346388), (84, 334017), (89, 315252), (108, 259791), (126, 222678), (139, 201852), (162, 173194), (178, 157626), (189, 148452), (252, 111339), (267, 105084), (278, 100926), (324, 86597), (356, 78813), (378, 74226), (417, 67284), (534, 52542), (556, 50463), (567, 49484), (623, 45036), (756, 37113), (801, 35028), (834, 33642), (973, 28836), (1068, 26271), (1134, 24742), (1246, 22518), (1251, 22428), (1602, 17514), (1668, 16821), (1869, 15012), (1946, 14418), (2268, 12371), (2403, 11676), (2492, 11259), (2502, 11214), (2919, 9612), (3204, 8757), (3738, 7506), (3753, 7476), (3892, 7209), (4806, 5838), (5004, 5607)]