21093005

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 28512000

約数和(自身を除く): 7418995

約数列:

[1, 5, 17, 29, 43, 85, 145, 199, 215, 493, 731, 995, 1247, 2465, 3383, 3655, 5771, 6235, 8557, 16915, 21199, 28855, 42785, 98107, 105995, 145469, 248153, 490535, 727345, 1240765, 4218601, 21093005]

約数ペア:

[(1, 21093005), (5, 4218601), (17, 1240765), (29, 727345), (43, 490535), (85, 248153), (145, 145469), (199, 105995), (215, 98107), (493, 42785), (731, 28855), (995, 21199), (1247, 16915), (2465, 8557), (3383, 6235), (3655, 5771)]