19987149

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10459}}^1$

素因数の和:10489

約数の個数: 24

約数和(自身を含む): 33388320

約数和(自身を除く): 13401171

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10459, 31377, 73213, 135967, 219639, 407901, 512491, 951769, 1537473, 2855307, 6662383, 19987149]

約数ペア:

[(1, 19987149), (3, 6662383), (7, 2855307), (13, 1537473), (21, 951769), (39, 512491), (49, 407901), (91, 219639), (147, 135967), (273, 73213), (637, 31377), (1911, 10459)]