19971475

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{739}}^1$

素因数の和:819

約数の個数: 24

約数和(自身を含む): 26426880

約数和(自身を除く): 6455405

約数列:

[1, 5, 23, 25, 47, 115, 235, 575, 739, 1081, 1175, 3695, 5405, 16997, 18475, 27025, 34733, 84985, 173665, 424925, 798859, 868325, 3994295, 19971475]

約数ペア:

[(1, 19971475), (5, 3994295), (23, 868325), (25, 798859), (47, 424925), (115, 173665), (235, 84985), (575, 34733), (739, 27025), (1081, 18475), (1175, 16997), (3695, 5405)]