21841808

素因数分解:

$2^4\times {\mathrm{1069}}^1\times {\mathrm{1277}}^1$

素因数の和:2354

約数の個数: 20

約数和(自身を含む): 42391260

約数和(自身を除く): 20549452

約数列:

[1, 2, 4, 8, 16, 1069, 1277, 2138, 2554, 4276, 5108, 8552, 10216, 17104, 20432, 1365113, 2730226, 5460452, 10920904, 21841808]

約数ペア:

[(1, 21841808), (2, 10920904), (4, 5460452), (8, 2730226), (16, 1365113), (1069, 20432), (1277, 17104), (2138, 10216), (2554, 8552), (4276, 5108)]