21800218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{9091}}^1$

素因数の和:9213

約数の個数: 16

約数和(自身を含む): 36004320

約数和(自身を除く): 14204102

約数列:

[1, 2, 11, 22, 109, 218, 1199, 2398, 9091, 18182, 100001, 200002, 990919, 1981838, 10900109, 21800218]

約数ペア:

[(1, 21800218), (2, 10900109), (11, 1981838), (22, 990919), (109, 200002), (218, 100001), (1199, 18182), (2398, 9091)]