19209820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3191}}^1$

素因数の和:3250

約数の個数: 48

約数和(自身を含む): 47190528

約数和(自身を除く): 27980708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3191, 6020, 6382, 12764, 15955, 22337, 31910, 44674, 63820, 89348, 111685, 137213, 223370, 274426, 446740, 548852, 686065, 960491, 1372130, 1920982, 2744260, 3841964, 4802455, 9604910, 19209820]

約数ペア:

[(1, 19209820), (2, 9604910), (4, 4802455), (5, 3841964), (7, 2744260), (10, 1920982), (14, 1372130), (20, 960491), (28, 686065), (35, 548852), (43, 446740), (70, 274426), (86, 223370), (140, 137213), (172, 111685), (215, 89348), (301, 63820), (430, 44674), (602, 31910), (860, 22337), (1204, 15955), (1505, 12764), (3010, 6382), (3191, 6020)]