28369775

素因数分解:

$5^2\times 7^2\times {\mathrm{23159}}^1$

素因数の和:23183

約数の個数: 18

約数和(自身を含む): 40923720

約数和(自身を除く): 12553945

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 23159, 115795, 162113, 578975, 810565, 1134791, 4052825, 5673955, 28369775]

約数ペア:

[(1, 28369775), (5, 5673955), (7, 4052825), (25, 1134791), (35, 810565), (49, 578975), (175, 162113), (245, 115795), (1225, 23159)]