21253008

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1471}}^1$

素因数の和:1532

約数の個数: 80

約数和(自身を含む): 64249856

約数和(自身を除く): 42996848

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 43, 48, 56, 84, 86, 112, 129, 168, 172, 258, 301, 336, 344, 516, 602, 688, 903, 1032, 1204, 1471, 1806, 2064, 2408, 2942, 3612, 4413, 4816, 5884, 7224, 8826, 10297, 11768, 14448, 17652, 20594, 23536, 30891, 35304, 41188, 61782, 63253, 70608, 82376, 123564, 126506, 164752, 189759, 247128, 253012, 379518, 442771, 494256, 506024, 759036, 885542, 1012048, 1328313, 1518072, 1771084, 2656626, 3036144, 3542168, 5313252, 7084336, 10626504, 21253008]

約数ペア:

[(1, 21253008), (2, 10626504), (3, 7084336), (4, 5313252), (6, 3542168), (7, 3036144), (8, 2656626), (12, 1771084), (14, 1518072), (16, 1328313), (21, 1012048), (24, 885542), (28, 759036), (42, 506024), (43, 494256), (48, 442771), (56, 379518), (84, 253012), (86, 247128), (112, 189759), (129, 164752), (168, 126506), (172, 123564), (258, 82376), (301, 70608), (336, 63253), (344, 61782), (516, 41188), (602, 35304), (688, 30891), (903, 23536), (1032, 20594), (1204, 17652), (1471, 14448), (1806, 11768), (2064, 10297), (2408, 8826), (2942, 7224), (3612, 5884), (4413, 4816)]