80982020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1487}}^1$

素因数の和:1892

約数の個数: 48

約数和(自身を含む): 194987520

約数和(自身を除く): 114005500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 389, 778, 1487, 1556, 1945, 2723, 2974, 3890, 5446, 5948, 7435, 7780, 10409, 10892, 13615, 14870, 20818, 27230, 29740, 41636, 52045, 54460, 104090, 208180, 578443, 1156886, 2313772, 2892215, 4049101, 5784430, 8098202, 11568860, 16196404, 20245505, 40491010, 80982020]

約数ペア:

[(1, 80982020), (2, 40491010), (4, 20245505), (5, 16196404), (7, 11568860), (10, 8098202), (14, 5784430), (20, 4049101), (28, 2892215), (35, 2313772), (70, 1156886), (140, 578443), (389, 208180), (778, 104090), (1487, 54460), (1556, 52045), (1945, 41636), (2723, 29740), (2974, 27230), (3890, 20818), (5446, 14870), (5948, 13615), (7435, 10892), (7780, 10409)]