81307090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{1861}}^1$

素因数の和:2142

約数の個数: 32

約数和(自身を含む): 155648304

約数和(自身を除く): 74341214

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 257, 514, 1285, 1861, 2570, 3722, 4369, 8738, 9305, 18610, 21845, 31637, 43690, 63274, 158185, 316370, 478277, 956554, 2391385, 4782770, 8130709, 16261418, 40653545, 81307090]

約数ペア:

[(1, 81307090), (2, 40653545), (5, 16261418), (10, 8130709), (17, 4782770), (34, 2391385), (85, 956554), (170, 478277), (257, 316370), (514, 158185), (1285, 63274), (1861, 43690), (2570, 31637), (3722, 21845), (4369, 18610), (8738, 9305)]