20951871

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3769}}^1$

素因数の和:3898

約数の個数: 16

約数和(自身を含む): 29858400

約数和(自身を除く): 8906529

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3769, 5559, 11307, 64073, 192219, 410821, 1232463, 6983957, 20951871]

約数ペア:

[(1, 20951871), (3, 6983957), (17, 1232463), (51, 410821), (109, 192219), (327, 64073), (1853, 11307), (3769, 5559)]