21439684

素因数分解:

$2^2\times 7^1\times {\mathrm{619}}^1\times {\mathrm{1237}}^1$

素因数の和:1867

約数の個数: 24

約数和(自身を含む): 42983360

約数和(自身を除く): 21543676

約数列:

[1, 2, 4, 7, 14, 28, 619, 1237, 1238, 2474, 2476, 4333, 4948, 8659, 8666, 17318, 17332, 34636, 765703, 1531406, 3062812, 5359921, 10719842, 21439684]

約数ペア:

[(1, 21439684), (2, 10719842), (4, 5359921), (7, 3062812), (14, 1531406), (28, 765703), (619, 34636), (1237, 17332), (1238, 17318), (2474, 8666), (2476, 8659), (4333, 4948)]