21211048

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{5209}}^1$

素因数の和:5724

約数の個数: 16

約数和(自身を含む): 39856500

約数和(自身を除く): 18645452

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 5209, 10418, 20836, 41672, 2651381, 5302762, 10605524, 21211048]

約数ペア:

[(1, 21211048), (2, 10605524), (4, 5302762), (8, 2651381), (509, 41672), (1018, 20836), (2036, 10418), (4072, 5209)]