4020205

素因数分解:

$5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 5725080

約数和(自身を除く): 1704875

約数列:

[1, 5, 7, 35, 49, 61, 245, 269, 305, 427, 1345, 1883, 2135, 2989, 9415, 13181, 14945, 16409, 65905, 82045, 114863, 574315, 804041, 4020205]

約数ペア:

[(1, 4020205), (5, 804041), (7, 574315), (35, 114863), (49, 82045), (61, 65905), (245, 16409), (269, 14945), (305, 13181), (427, 9415), (1345, 2989), (1883, 2135)]