21381435

素因数分解:

$3^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{631}}^1$

素因数の和:896

約数の個数: 32

約数和(自身を含む): 38223360

約数和(自身を除く): 16841925

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 251, 631, 753, 1255, 1893, 2259, 3155, 3765, 5679, 6777, 9465, 11295, 17037, 28395, 33885, 85185, 158381, 475143, 791905, 1425429, 2375715, 4276287, 7127145, 21381435]

約数ペア:

[(1, 21381435), (3, 7127145), (5, 4276287), (9, 2375715), (15, 1425429), (27, 791905), (45, 475143), (135, 158381), (251, 85185), (631, 33885), (753, 28395), (1255, 17037), (1893, 11295), (2259, 9465), (3155, 6777), (3765, 5679)]