20995758

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{281}}^1\times {\mathrm{593}}^1$

素因数の和:889

約数の個数: 48

約数和(自身を含む): 52262496

約数和(自身を除く): 31266738

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 281, 562, 593, 843, 1186, 1686, 1779, 1967, 2529, 3558, 3934, 4151, 5058, 5337, 5901, 8302, 10674, 11802, 12453, 17703, 24906, 35406, 37359, 74718, 166633, 333266, 499899, 999798, 1166431, 1499697, 2332862, 2999394, 3499293, 6998586, 10497879, 20995758]

約数ペア:

[(1, 20995758), (2, 10497879), (3, 6998586), (6, 3499293), (7, 2999394), (9, 2332862), (14, 1499697), (18, 1166431), (21, 999798), (42, 499899), (63, 333266), (126, 166633), (281, 74718), (562, 37359), (593, 35406), (843, 24906), (1186, 17703), (1686, 12453), (1779, 11802), (1967, 10674), (2529, 8302), (3558, 5901), (3934, 5337), (4151, 5058)]