20980659

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{733}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 33822720

約数和(自身を除く): 12842061

約数列:

[1, 3, 7, 21, 29, 47, 87, 141, 203, 329, 609, 733, 987, 1363, 2199, 4089, 5131, 9541, 15393, 21257, 28623, 34451, 63771, 103353, 148799, 241157, 446397, 723471, 999079, 2997237, 6993553, 20980659]

約数ペア:

[(1, 20980659), (3, 6993553), (7, 2997237), (21, 999079), (29, 723471), (47, 446397), (87, 241157), (141, 148799), (203, 103353), (329, 63771), (609, 34451), (733, 28623), (987, 21257), (1363, 15393), (2199, 9541), (4089, 5131)]