20377618

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1\times {\mathrm{479}}^1$

素因数の和:809

約数の個数: 16

約数和(自身を含む): 31104000

約数和(自身を除く): 10726382

約数列:

[1, 2, 89, 178, 239, 478, 479, 958, 21271, 42542, 42631, 85262, 114481, 228962, 10188809, 20377618]

約数ペア:

[(1, 20377618), (2, 10188809), (89, 228962), (178, 114481), (239, 85262), (478, 42631), (479, 42542), (958, 21271)]