20990554

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{42491}}^1$

素因数の和:42525

約数の個数: 16

約数和(自身を含む): 35693280

約数和(自身を除く): 14702726

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 42491, 84982, 552383, 807329, 1104766, 1614658, 10495277, 20990554]

約数ペア:

[(1, 20990554), (2, 10495277), (13, 1614658), (19, 1104766), (26, 807329), (38, 552383), (247, 84982), (494, 42491)]