81781180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{314543}}^1$

素因数の和:314565

約数の個数: 24

約数和(自身を含む): 184951872

約数和(自身を除く): 103170692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 314543, 629086, 1258172, 1572715, 3145430, 4089059, 6290860, 8178118, 16356236, 20445295, 40890590, 81781180]

約数ペア:

[(1, 81781180), (2, 40890590), (4, 20445295), (5, 16356236), (10, 8178118), (13, 6290860), (20, 4089059), (26, 3145430), (52, 1572715), (65, 1258172), (130, 629086), (260, 314543)]