21049071

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{1187}}^1$

素因数の和:1470

約数の個数: 16

約数和(自身を含む): 29424384

約数和(自身を除く): 8375313

約数列:

[1, 3, 23, 69, 257, 771, 1187, 3561, 5911, 17733, 27301, 81903, 305059, 915177, 7016357, 21049071]

約数ペア:

[(1, 21049071), (3, 7016357), (23, 915177), (69, 305059), (257, 81903), (771, 27301), (1187, 17733), (3561, 5911)]