19497681

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1571}}^1$

素因数の和:1781

約数の個数: 24

約数和(自身を含む): 32370624

約数和(自身を除く): 12872943

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1571, 1773, 4137, 4713, 10997, 12411, 14139, 32991, 98973, 309487, 928461, 2166409, 2785383, 6499227, 19497681]

約数ペア:

[(1, 19497681), (3, 6499227), (7, 2785383), (9, 2166409), (21, 928461), (63, 309487), (197, 98973), (591, 32991), (1379, 14139), (1571, 12411), (1773, 10997), (4137, 4713)]