28105168

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:324

約数の個数: 80

約数和(自身を含む): 68051200

約数和(自身を除く): 39946032

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 97, 104, 112, 182, 194, 199, 208, 364, 388, 398, 679, 728, 776, 796, 1261, 1358, 1393, 1456, 1552, 1592, 2522, 2587, 2716, 2786, 3184, 5044, 5174, 5432, 5572, 8827, 10088, 10348, 10864, 11144, 17654, 18109, 19303, 20176, 20696, 22288, 35308, 36218, 38606, 41392, 70616, 72436, 77212, 135121, 141232, 144872, 154424, 250939, 270242, 289744, 308848, 501878, 540484, 1003756, 1080968, 1756573, 2007512, 2161936, 3513146, 4015024, 7026292, 14052584, 28105168]

約数ペア:

[(1, 28105168), (2, 14052584), (4, 7026292), (7, 4015024), (8, 3513146), (13, 2161936), (14, 2007512), (16, 1756573), (26, 1080968), (28, 1003756), (52, 540484), (56, 501878), (91, 308848), (97, 289744), (104, 270242), (112, 250939), (182, 154424), (194, 144872), (199, 141232), (208, 135121), (364, 77212), (388, 72436), (398, 70616), (679, 41392), (728, 38606), (776, 36218), (796, 35308), (1261, 22288), (1358, 20696), (1393, 20176), (1456, 19303), (1552, 18109), (1592, 17654), (2522, 11144), (2587, 10864), (2716, 10348), (2786, 10088), (3184, 8827), (5044, 5572), (5174, 5432)]