81554590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1979}}^1$

素因数の和:2316

約数の個数: 32

約数和(自身を含む): 158669280

約数和(自身を除く): 77114690

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 317, 634, 1585, 1979, 3170, 3958, 4121, 8242, 9895, 19790, 20605, 25727, 41210, 51454, 128635, 257270, 627343, 1254686, 3136715, 6273430, 8155459, 16310918, 40777295, 81554590]

約数ペア:

[(1, 81554590), (2, 40777295), (5, 16310918), (10, 8155459), (13, 6273430), (26, 3136715), (65, 1254686), (130, 627343), (317, 257270), (634, 128635), (1585, 51454), (1979, 41210), (3170, 25727), (3958, 20605), (4121, 19790), (8242, 9895)]