21299061

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 33679360

約数和(自身を除く): 12380299

約数列:

[1, 3, 7, 21, 43, 103, 129, 229, 301, 309, 687, 721, 903, 1603, 2163, 4429, 4809, 9847, 13287, 23587, 29541, 31003, 68929, 70761, 93009, 165109, 206787, 495327, 1014241, 3042723, 7099687, 21299061]

約数ペア:

[(1, 21299061), (3, 7099687), (7, 3042723), (21, 1014241), (43, 495327), (103, 206787), (129, 165109), (229, 93009), (301, 70761), (309, 68929), (687, 31003), (721, 29541), (903, 23587), (1603, 13287), (2163, 9847), (4429, 4809)]