9881780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6959}}^1$

素因数の和:7039

約数の個数: 24

約数和(自身を含む): 21047040

約数和(自身を除く): 11165260

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 6959, 13918, 27836, 34795, 69590, 139180, 494089, 988178, 1976356, 2470445, 4940890, 9881780]

約数ペア:

[(1, 9881780), (2, 4940890), (4, 2470445), (5, 1976356), (10, 988178), (20, 494089), (71, 139180), (142, 69590), (284, 34795), (355, 27836), (710, 13918), (1420, 6959)]