778889342

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{19991}}^1$

素因数の和:20045

約数の個数: 48

約数和(自身を含む): 1531547136

約数和(自身を除く): 752657794

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 121, 154, 161, 242, 253, 322, 506, 847, 1694, 1771, 2783, 3542, 5566, 19481, 19991, 38962, 39982, 139937, 219901, 279874, 439802, 459793, 919586, 1539307, 2418911, 3078614, 3218551, 4837822, 5057723, 6437102, 10115446, 16932377, 33864754, 35404061, 55634953, 70808122, 111269906, 389444671, 778889342]

約数ペア:

[(1, 778889342), (2, 389444671), (7, 111269906), (11, 70808122), (14, 55634953), (22, 35404061), (23, 33864754), (46, 16932377), (77, 10115446), (121, 6437102), (154, 5057723), (161, 4837822), (242, 3218551), (253, 3078614), (322, 2418911), (506, 1539307), (847, 919586), (1694, 459793), (1771, 439802), (2783, 279874), (3542, 219901), (5566, 139937), (19481, 39982), (19991, 38962)]