20987078

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{809}}^1$

素因数の和:944

約数の個数: 32

約数和(自身を含む): 38491200

約数和(自身を除く): 17504122

約数列:

[1, 2, 7, 14, 17, 34, 109, 119, 218, 238, 763, 809, 1526, 1618, 1853, 3706, 5663, 11326, 12971, 13753, 25942, 27506, 88181, 96271, 176362, 192542, 617267, 1234534, 1499077, 2998154, 10493539, 20987078]

約数ペア:

[(1, 20987078), (2, 10493539), (7, 2998154), (14, 1499077), (17, 1234534), (34, 617267), (109, 192542), (119, 176362), (218, 96271), (238, 88181), (763, 27506), (809, 25942), (1526, 13753), (1618, 12971), (1853, 11326), (3706, 5663)]