28972720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:435

約数の個数: 120

約数和(自身を含む): 82695600

約数和(自身を除く): 53722880

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, 389, 392, 490, 532, 560, 665, 760, 778, 784, 931, 980, 1064, 1330, 1520, 1556, 1862, 1945, 1960, 2128, 2660, 2723, 3112, 3724, 3890, 3920, 4655, 5320, 5446, 6224, 7391, 7448, 7780, 9310, 10640, 10892, 13615, 14782, 14896, 15560, 18620, 19061, 21784, 27230, 29564, 31120, 36955, 37240, 38122, 43568, 51737, 54460, 59128, 73910, 74480, 76244, 95305, 103474, 108920, 118256, 147820, 152488, 190610, 206948, 217840, 258685, 295640, 304976, 362159, 381220, 413896, 517370, 591280, 724318, 762440, 827792, 1034740, 1448636, 1524880, 1810795, 2069480, 2897272, 3621590, 4138960, 5794544, 7243180, 14486360, 28972720]

約数ペア:

[(1, 28972720), (2, 14486360), (4, 7243180), (5, 5794544), (7, 4138960), (8, 3621590), (10, 2897272), (14, 2069480), (16, 1810795), (19, 1524880), (20, 1448636), (28, 1034740), (35, 827792), (38, 762440), (40, 724318), (49, 591280), (56, 517370), (70, 413896), (76, 381220), (80, 362159), (95, 304976), (98, 295640), (112, 258685), (133, 217840), (140, 206948), (152, 190610), (190, 152488), (196, 147820), (245, 118256), (266, 108920), (280, 103474), (304, 95305), (380, 76244), (389, 74480), (392, 73910), (490, 59128), (532, 54460), (560, 51737), (665, 43568), (760, 38122), (778, 37240), (784, 36955), (931, 31120), (980, 29564), (1064, 27230), (1330, 21784), (1520, 19061), (1556, 18620), (1862, 15560), (1945, 14896), (1960, 14782), (2128, 13615), (2660, 10892), (2723, 10640), (3112, 9310), (3724, 7780), (3890, 7448), (3920, 7391), (4655, 6224), (5320, 5446)]