13221355

素因数分解:

$5^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{751}}^1$

素因数の和:1266

約数の個数: 16

約数和(自身を含む): 18192384

約数和(自身を除く): 4971029

約数列:

[1, 5, 7, 35, 503, 751, 2515, 3521, 3755, 5257, 17605, 26285, 377753, 1888765, 2644271, 13221355]

約数ペア:

[(1, 13221355), (5, 2644271), (7, 1888765), (35, 377753), (503, 26285), (751, 17605), (2515, 5257), (3521, 3755)]