16820209

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{569}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 19918080

約数和(自身を除く): 3097871

約数列:

[1, 7, 41, 103, 287, 569, 721, 3983, 4223, 23329, 29561, 58607, 163303, 410249, 2402887, 16820209]

約数ペア:

[(1, 16820209), (7, 2402887), (41, 410249), (103, 163303), (287, 58607), (569, 29561), (721, 23329), (3983, 4223)]