2543980

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{409}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 5372640

約数和(自身を除く): 2828660

約数列:

[1, 2, 4, 5, 10, 20, 311, 409, 622, 818, 1244, 1555, 1636, 2045, 3110, 4090, 6220, 8180, 127199, 254398, 508796, 635995, 1271990, 2543980]

約数ペア:

[(1, 2543980), (2, 1271990), (4, 635995), (5, 508796), (10, 254398), (20, 127199), (311, 8180), (409, 6220), (622, 4090), (818, 3110), (1244, 2045), (1555, 1636)]