28126280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7727}}^1$

素因数の和:7758

約数の個数: 64

約数和(自身を含む): 77898240

約数和(自身を除く): 49771960

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 7727, 15454, 30908, 38635, 54089, 61816, 77270, 100451, 108178, 154540, 200902, 216356, 270445, 309080, 401804, 432712, 502255, 540890, 703157, 803608, 1004510, 1081780, 1406314, 2009020, 2163560, 2812628, 3515785, 4018040, 5625256, 7031570, 14063140, 28126280]

約数ペア:

[(1, 28126280), (2, 14063140), (4, 7031570), (5, 5625256), (7, 4018040), (8, 3515785), (10, 2812628), (13, 2163560), (14, 2009020), (20, 1406314), (26, 1081780), (28, 1004510), (35, 803608), (40, 703157), (52, 540890), (56, 502255), (65, 432712), (70, 401804), (91, 309080), (104, 270445), (130, 216356), (140, 200902), (182, 154540), (260, 108178), (280, 100451), (364, 77270), (455, 61816), (520, 54089), (728, 38635), (910, 30908), (1820, 15454), (3640, 7727)]