28525840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{383}}^1$

素因数の和:429

約数の個数: 120

約数和(自身を含む): 81423360

約数和(自身を除く): 52897520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 190, 196, 245, 266, 280, 304, 380, 383, 392, 490, 532, 560, 665, 760, 766, 784, 931, 980, 1064, 1330, 1520, 1532, 1862, 1915, 1960, 2128, 2660, 2681, 3064, 3724, 3830, 3920, 4655, 5320, 5362, 6128, 7277, 7448, 7660, 9310, 10640, 10724, 13405, 14554, 14896, 15320, 18620, 18767, 21448, 26810, 29108, 30640, 36385, 37240, 37534, 42896, 50939, 53620, 58216, 72770, 74480, 75068, 93835, 101878, 107240, 116432, 145540, 150136, 187670, 203756, 214480, 254695, 291080, 300272, 356573, 375340, 407512, 509390, 582160, 713146, 750680, 815024, 1018780, 1426292, 1501360, 1782865, 2037560, 2852584, 3565730, 4075120, 5705168, 7131460, 14262920, 28525840]

約数ペア:

[(1, 28525840), (2, 14262920), (4, 7131460), (5, 5705168), (7, 4075120), (8, 3565730), (10, 2852584), (14, 2037560), (16, 1782865), (19, 1501360), (20, 1426292), (28, 1018780), (35, 815024), (38, 750680), (40, 713146), (49, 582160), (56, 509390), (70, 407512), (76, 375340), (80, 356573), (95, 300272), (98, 291080), (112, 254695), (133, 214480), (140, 203756), (152, 187670), (190, 150136), (196, 145540), (245, 116432), (266, 107240), (280, 101878), (304, 93835), (380, 75068), (383, 74480), (392, 72770), (490, 58216), (532, 53620), (560, 50939), (665, 42896), (760, 37534), (766, 37240), (784, 36385), (931, 30640), (980, 29108), (1064, 26810), (1330, 21448), (1520, 18767), (1532, 18620), (1862, 15320), (1915, 14896), (1960, 14554), (2128, 13405), (2660, 10724), (2681, 10640), (3064, 9310), (3724, 7660), (3830, 7448), (3920, 7277), (4655, 6128), (5320, 5362)]