21371886

素因数分解:

$2^1\times 3^2\times {\mathrm{409}}^1\times {\mathrm{2903}}^1$

素因数の和:3320

約数の個数: 24

約数和(自身を含む): 46434960

約数和(自身を除く): 25063074

約数列:

[1, 2, 3, 6, 9, 18, 409, 818, 1227, 2454, 2903, 3681, 5806, 7362, 8709, 17418, 26127, 52254, 1187327, 2374654, 3561981, 7123962, 10685943, 21371886]

約数ペア:

[(1, 21371886), (2, 10685943), (3, 7123962), (6, 3561981), (9, 2374654), (18, 1187327), (409, 52254), (818, 26127), (1227, 17418), (2454, 8709), (2903, 7362), (3681, 5806)]