21985904

素因数分解:

$2^4\times {\mathrm{557}}^1\times {\mathrm{2467}}^1$

素因数の和:3032

約数の個数: 20

約数和(自身を含む): 42691464

約数和(自身を除く): 20705560

約数列:

[1, 2, 4, 8, 16, 557, 1114, 2228, 2467, 4456, 4934, 8912, 9868, 19736, 39472, 1374119, 2748238, 5496476, 10992952, 21985904]

約数ペア:

[(1, 21985904), (2, 10992952), (4, 5496476), (8, 2748238), (16, 1374119), (557, 39472), (1114, 19736), (2228, 9868), (2467, 8912), (4456, 4934)]