21772016

素因数分解:

$2^4\times 7^1\times {\mathrm{349}}^1\times {\mathrm{557}}^1$

素因数の和:921

約数の個数: 40

約数和(自身を含む): 48434400

約数和(自身を除く): 26662384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 349, 557, 698, 1114, 1396, 2228, 2443, 2792, 3899, 4456, 4886, 5584, 7798, 8912, 9772, 15596, 19544, 31192, 39088, 62384, 194393, 388786, 777572, 1360751, 1555144, 2721502, 3110288, 5443004, 10886008, 21772016]

約数ペア:

[(1, 21772016), (2, 10886008), (4, 5443004), (7, 3110288), (8, 2721502), (14, 1555144), (16, 1360751), (28, 777572), (56, 388786), (112, 194393), (349, 62384), (557, 39088), (698, 31192), (1114, 19544), (1396, 15596), (2228, 9772), (2443, 8912), (2792, 7798), (3899, 5584), (4456, 4886)]