491279999

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{179}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 590768640

約数和(自身を除く): 99488641

約数列:

[1, 7, 41, 73, 131, 179, 287, 511, 917, 1253, 2993, 5371, 7339, 9563, 13067, 20951, 23449, 37597, 51373, 66941, 91469, 164143, 392083, 535747, 961409, 1711777, 2744581, 3750229, 6729863, 11982439, 70182857, 491279999]

約数ペア:

[(1, 491279999), (7, 70182857), (41, 11982439), (73, 6729863), (131, 3750229), (179, 2744581), (287, 1711777), (511, 961409), (917, 535747), (1253, 392083), (2993, 164143), (5371, 91469), (7339, 66941), (9563, 51373), (13067, 37597), (20951, 23449)]