19991973

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1\times {\mathrm{631}}^1$

素因数の和:872

約数の個数: 16

約数和(自身を含む): 27302400

約数和(自身を除く): 7310427

約数列:

[1, 3, 59, 177, 179, 537, 631, 1893, 10561, 31683, 37229, 111687, 112949, 338847, 6663991, 19991973]

約数ペア:

[(1, 19991973), (3, 6663991), (59, 338847), (177, 112949), (179, 111687), (537, 37229), (631, 31683), (1893, 10561)]