21320320

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4759}}^1$

素因数の和:4785

約数の個数: 64

約数和(自身を含む): 58262400

約数和(自身を除く): 36942080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4759, 9518, 19036, 23795, 33313, 38072, 47590, 66626, 76144, 95180, 133252, 152288, 166565, 190360, 266504, 304576, 333130, 380720, 533008, 609152, 666260, 761440, 1066016, 1332520, 1522880, 2132032, 2665040, 3045760, 4264064, 5330080, 10660160, 21320320]

約数ペア:

[(1, 21320320), (2, 10660160), (4, 5330080), (5, 4264064), (7, 3045760), (8, 2665040), (10, 2132032), (14, 1522880), (16, 1332520), (20, 1066016), (28, 761440), (32, 666260), (35, 609152), (40, 533008), (56, 380720), (64, 333130), (70, 304576), (80, 266504), (112, 190360), (128, 166565), (140, 152288), (160, 133252), (224, 95180), (280, 76144), (320, 66626), (448, 47590), (560, 38072), (640, 33313), (896, 23795), (1120, 19036), (2240, 9518), (4480, 4759)]