19877809

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:600

約数の個数: 16

約数和(自身を含む): 23379840

約数和(自身を除く): 3502031

約数列:

[1, 7, 53, 131, 371, 409, 917, 2863, 6943, 21677, 48601, 53579, 151739, 375053, 2839687, 19877809]

約数ペア:

[(1, 19877809), (7, 2839687), (53, 375053), (131, 151739), (371, 53579), (409, 48601), (917, 21677), (2863, 6943)]