21215553

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{439}}^1$

素因数の和:712

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 7613247

約数列:

[1, 3, 89, 181, 267, 439, 543, 1317, 16109, 39071, 48327, 79459, 117213, 238377, 7071851, 21215553]

約数ペア:

[(1, 21215553), (3, 7071851), (89, 238377), (181, 117213), (267, 79459), (439, 48327), (543, 39071), (1317, 16109)]