81131180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{312043}}^1$

素因数の和:312065

約数の個数: 24

約数和(自身を含む): 183481872

約数和(自身を除く): 102350692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 312043, 624086, 1248172, 1560215, 3120430, 4056559, 6240860, 8113118, 16226236, 20282795, 40565590, 81131180]

約数ペア:

[(1, 81131180), (2, 40565590), (4, 20282795), (5, 16226236), (10, 8113118), (13, 6240860), (20, 4056559), (26, 3120430), (52, 1560215), (65, 1248172), (130, 624086), (260, 312043)]