19071988

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:436

約数の個数: 36

約数和(自身を含む): 36662220

約数和(自身を除く): 17590232

約数列:

[1, 2, 4, 13, 26, 52, 89, 169, 178, 317, 338, 356, 634, 676, 1157, 1268, 2314, 4121, 4628, 8242, 15041, 16484, 28213, 30082, 53573, 56426, 60164, 107146, 112852, 214292, 366769, 733538, 1467076, 4767997, 9535994, 19071988]

約数ペア:

[(1, 19071988), (2, 9535994), (4, 4767997), (13, 1467076), (26, 733538), (52, 366769), (89, 214292), (169, 112852), (178, 107146), (317, 60164), (338, 56426), (356, 53573), (634, 30082), (676, 28213), (1157, 16484), (1268, 15041), (2314, 8242), (4121, 4628)]