19979253

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1033}}^1$

素因数の和:1353

約数の個数: 24

約数和(自身を含む): 33121088

約数和(自身を除く): 13141835

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 1033, 2149, 2763, 3099, 6447, 7231, 9297, 19341, 21693, 65079, 317131, 951393, 2219917, 2854179, 6659751, 19979253]

約数ペア:

[(1, 19979253), (3, 6659751), (7, 2854179), (9, 2219917), (21, 951393), (63, 317131), (307, 65079), (921, 21693), (1033, 19341), (2149, 9297), (2763, 7231), (3099, 6447)]