2579980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9923}}^1$

素因数の和:9945

約数の個数: 24

約数和(自身を含む): 5835312

約数和(自身を除く): 3255332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 9923, 19846, 39692, 49615, 99230, 128999, 198460, 257998, 515996, 644995, 1289990, 2579980]

約数ペア:

[(1, 2579980), (2, 1289990), (4, 644995), (5, 515996), (10, 257998), (13, 198460), (20, 128999), (26, 99230), (52, 49615), (65, 39692), (130, 19846), (260, 9923)]