21666890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{3191}}^1$

素因数の和:3302

約数の個数: 32

約数和(自身を含む): 45045504

約数和(自身を除く): 23378614

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 97, 194, 485, 679, 970, 1358, 3191, 3395, 6382, 6790, 15955, 22337, 31910, 44674, 111685, 223370, 309527, 619054, 1547635, 2166689, 3095270, 4333378, 10833445, 21666890]

約数ペア:

[(1, 21666890), (2, 10833445), (5, 4333378), (7, 3095270), (10, 2166689), (14, 1547635), (35, 619054), (70, 309527), (97, 223370), (194, 111685), (485, 44674), (679, 31910), (970, 22337), (1358, 15955), (3191, 6790), (3395, 6382)]