221426401

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{2897}}^1$

素因数の和:3144

約数の個数: 16

約数和(自身を含む): 258733440

約数和(自身を除く): 37307039

約数列:

[1, 7, 61, 179, 427, 1253, 2897, 10919, 20279, 76433, 176717, 518563, 1237019, 3629941, 31632343, 221426401]

約数ペア:

[(1, 221426401), (7, 31632343), (61, 3629941), (179, 1237019), (427, 518563), (1253, 176717), (2897, 76433), (10919, 20279)]