21904804

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{673}}^1$

素因数の和:859

約数の個数: 24

約数和(自身を含む): 39253760

約数和(自身を除く): 17348956

約数列:

[1, 2, 4, 79, 103, 158, 206, 316, 412, 673, 1346, 2692, 8137, 16274, 32548, 53167, 69319, 106334, 138638, 212668, 277276, 5476201, 10952402, 21904804]

約数ペア:

[(1, 21904804), (2, 10952402), (4, 5476201), (79, 277276), (103, 212668), (158, 138638), (206, 106334), (316, 69319), (412, 53167), (673, 32548), (1346, 16274), (2692, 8137)]