19017778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{373}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 32232816

約数和(自身を除く): 13215038

約数列:

[1, 2, 13, 26, 37, 53, 74, 106, 373, 481, 689, 746, 962, 1378, 1961, 3922, 4849, 9698, 13801, 19769, 25493, 27602, 39538, 50986, 179413, 256997, 358826, 513994, 731453, 1462906, 9508889, 19017778]

約数ペア:

[(1, 19017778), (2, 9508889), (13, 1462906), (26, 731453), (37, 513994), (53, 358826), (74, 256997), (106, 179413), (373, 50986), (481, 39538), (689, 27602), (746, 25493), (962, 19769), (1378, 13801), (1961, 9698), (3922, 4849)]