21181851567

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41290159}}^1$

素因数の和:41290187

約数の個数: 16

約数和(自身を含む): 33032128000

約数和(自身を除く): 11850276433

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41290159, 123870477, 371611431, 784513021, 1114834293, 2353539063, 7060617189, 21181851567]

約数ペア:

[(1, 21181851567), (3, 7060617189), (9, 2353539063), (19, 1114834293), (27, 784513021), (57, 371611431), (171, 123870477), (513, 41290159)]