20723140

素因数分解:

$2^2\times 5^1\times {\mathrm{823}}^1\times {\mathrm{1259}}^1$

素因数の和:2091

約数の個数: 24

約数和(自身を含む): 43606080

約数和(自身を除く): 22882940

約数列:

[1, 2, 4, 5, 10, 20, 823, 1259, 1646, 2518, 3292, 4115, 5036, 6295, 8230, 12590, 16460, 25180, 1036157, 2072314, 4144628, 5180785, 10361570, 20723140]

約数ペア:

[(1, 20723140), (2, 10361570), (4, 5180785), (5, 4144628), (10, 2072314), (20, 1036157), (823, 25180), (1259, 16460), (1646, 12590), (2518, 8230), (3292, 6295), (4115, 5036)]