20471493

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51307}}^1$

素因数の和:51336

約数の個数: 16

約数和(自身を含む): 32837120

約数和(自身を除く): 12365627

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51307, 153921, 359149, 974833, 1077447, 2924499, 6823831, 20471493]

約数ペア:

[(1, 20471493), (3, 6823831), (7, 2924499), (19, 1077447), (21, 974833), (57, 359149), (133, 153921), (399, 51307)]