21488019

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1151}}^1$

素因数の和:1295

約数の個数: 24

約数和(自身を含む): 33619968

約数和(自身を除く): 12131949

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 1151, 2667, 3453, 6223, 8057, 18669, 24171, 56399, 146177, 169197, 438531, 1023239, 3069717, 7162673, 21488019]

約数ペア:

[(1, 21488019), (3, 7162673), (7, 3069717), (21, 1023239), (49, 438531), (127, 169197), (147, 146177), (381, 56399), (889, 24171), (1151, 18669), (2667, 8057), (3453, 6223)]