978084387

素因数分解:

$3^2\times 7^1\times {\mathrm{787}}^1\times {\mathrm{19727}}^1$

素因数の和:20527

約数の個数: 24

約数和(自身を含む): 1616749056

約数和(自身を除く): 638664669

約数列:

[1, 3, 7, 9, 21, 63, 787, 2361, 5509, 7083, 16527, 19727, 49581, 59181, 138089, 177543, 414267, 1242801, 15525149, 46575447, 108676043, 139726341, 326028129, 978084387]

約数ペア:

[(1, 978084387), (3, 326028129), (7, 139726341), (9, 108676043), (21, 46575447), (63, 15525149), (787, 1242801), (2361, 414267), (5509, 177543), (7083, 138089), (16527, 59181), (19727, 49581)]