21219065

素因数分解:

$5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{1381}}^1$

素因数の和:1832

約数の個数: 16

約数和(自身を含む): 29187840

約数和(自身を除く): 7968775

約数列:

[1, 5, 7, 35, 439, 1381, 2195, 3073, 6905, 9667, 15365, 48335, 606259, 3031295, 4243813, 21219065]

約数ペア:

[(1, 21219065), (5, 4243813), (7, 3031295), (35, 606259), (439, 48335), (1381, 15365), (2195, 9667), (3073, 6905)]