28464520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{367}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 73658880

約数和(自身を除く): 45194360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 277, 280, 367, 554, 734, 1108, 1385, 1468, 1835, 1939, 2216, 2569, 2770, 2936, 3670, 3878, 5138, 5540, 7340, 7756, 9695, 10276, 11080, 12845, 14680, 15512, 19390, 20552, 25690, 38780, 51380, 77560, 101659, 102760, 203318, 406636, 508295, 711613, 813272, 1016590, 1423226, 2033180, 2846452, 3558065, 4066360, 5692904, 7116130, 14232260, 28464520]

約数ペア:

[(1, 28464520), (2, 14232260), (4, 7116130), (5, 5692904), (7, 4066360), (8, 3558065), (10, 2846452), (14, 2033180), (20, 1423226), (28, 1016590), (35, 813272), (40, 711613), (56, 508295), (70, 406636), (140, 203318), (277, 102760), (280, 101659), (367, 77560), (554, 51380), (734, 38780), (1108, 25690), (1385, 20552), (1468, 19390), (1835, 15512), (1939, 14680), (2216, 12845), (2569, 11080), (2770, 10276), (2936, 9695), (3670, 7756), (3878, 7340), (5138, 5540)]