28627839

素因数分解:

$3^2\times {\mathrm{71}}^2\times {\mathrm{631}}^1$

素因数の和:779

約数の個数: 18

約数和(自身を含む): 42008408

約数和(自身を除く): 13380569

約数列:

[1, 3, 9, 71, 213, 631, 639, 1893, 5041, 5679, 15123, 44801, 45369, 134403, 403209, 3180871, 9542613, 28627839]

約数ペア:

[(1, 28627839), (3, 9542613), (9, 3180871), (71, 403209), (213, 134403), (631, 45369), (639, 44801), (1893, 15123), (5041, 5679)]