20639080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6701}}^1$

素因数の和:6730

約数の個数: 64

約数和(自身を含む): 57905280

約数和(自身を除く): 37266200

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6701, 13402, 26804, 33505, 46907, 53608, 67010, 73711, 93814, 134020, 147422, 187628, 234535, 268040, 294844, 368555, 375256, 469070, 515977, 589688, 737110, 938140, 1031954, 1474220, 1876280, 2063908, 2579885, 2948440, 4127816, 5159770, 10319540, 20639080]

約数ペア:

[(1, 20639080), (2, 10319540), (4, 5159770), (5, 4127816), (7, 2948440), (8, 2579885), (10, 2063908), (11, 1876280), (14, 1474220), (20, 1031954), (22, 938140), (28, 737110), (35, 589688), (40, 515977), (44, 469070), (55, 375256), (56, 368555), (70, 294844), (77, 268040), (88, 234535), (110, 187628), (140, 147422), (154, 134020), (220, 93814), (280, 73711), (308, 67010), (385, 53608), (440, 46907), (616, 33505), (770, 26804), (1540, 13402), (3080, 6701)]