215131708

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{444487}}^1$

素因数の和:444513

約数の個数: 18

約数和(自身を含む): 413818328

約数和(自身を除く): 198686620

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 444487, 888974, 1777948, 4889357, 9778714, 19557428, 53782927, 107565854, 215131708]

約数ペア:

[(1, 215131708), (2, 107565854), (4, 53782927), (11, 19557428), (22, 9778714), (44, 4889357), (121, 1777948), (242, 888974), (484, 444487)]