28505680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{467}}^1$

素因数の和:596

約数の個数: 80

約数和(自身を含む): 76602240

約数和(自身を除く): 48096560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 436, 467, 545, 560, 763, 872, 934, 1090, 1526, 1744, 1868, 2180, 2335, 3052, 3269, 3736, 3815, 4360, 4670, 6104, 6538, 7472, 7630, 8720, 9340, 12208, 13076, 15260, 16345, 18680, 26152, 30520, 32690, 37360, 50903, 52304, 61040, 65380, 101806, 130760, 203612, 254515, 261520, 356321, 407224, 509030, 712642, 814448, 1018060, 1425284, 1781605, 2036120, 2850568, 3563210, 4072240, 5701136, 7126420, 14252840, 28505680]

約数ペア:

[(1, 28505680), (2, 14252840), (4, 7126420), (5, 5701136), (7, 4072240), (8, 3563210), (10, 2850568), (14, 2036120), (16, 1781605), (20, 1425284), (28, 1018060), (35, 814448), (40, 712642), (56, 509030), (70, 407224), (80, 356321), (109, 261520), (112, 254515), (140, 203612), (218, 130760), (280, 101806), (436, 65380), (467, 61040), (545, 52304), (560, 50903), (763, 37360), (872, 32690), (934, 30520), (1090, 26152), (1526, 18680), (1744, 16345), (1868, 15260), (2180, 13076), (2335, 12208), (3052, 9340), (3269, 8720), (3736, 7630), (3815, 7472), (4360, 6538), (4670, 6104)]