28046900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:513

約数の個数: 72

約数和(自身を含む): 70412160

約数和(自身を除く): 42365260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 103, 140, 175, 206, 350, 389, 412, 515, 700, 721, 778, 1030, 1442, 1556, 1945, 2060, 2575, 2723, 2884, 3605, 3890, 5150, 5446, 7210, 7780, 9725, 10300, 10892, 13615, 14420, 18025, 19450, 27230, 36050, 38900, 40067, 54460, 68075, 72100, 80134, 136150, 160268, 200335, 272300, 280469, 400670, 560938, 801340, 1001675, 1121876, 1402345, 2003350, 2804690, 4006700, 5609380, 7011725, 14023450, 28046900]

約数ペア:

[(1, 28046900), (2, 14023450), (4, 7011725), (5, 5609380), (7, 4006700), (10, 2804690), (14, 2003350), (20, 1402345), (25, 1121876), (28, 1001675), (35, 801340), (50, 560938), (70, 400670), (100, 280469), (103, 272300), (140, 200335), (175, 160268), (206, 136150), (350, 80134), (389, 72100), (412, 68075), (515, 54460), (700, 40067), (721, 38900), (778, 36050), (1030, 27230), (1442, 19450), (1556, 18025), (1945, 14420), (2060, 13615), (2575, 10892), (2723, 10300), (2884, 9725), (3605, 7780), (3890, 7210), (5150, 5446)]