21857085

素因数分解:

$3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2543}}^1$

素因数の和:2745

約数の個数: 24

約数和(自身を含む): 38098944

約数和(自身を除く): 16241859

約数列:

[1, 3, 5, 9, 15, 45, 191, 573, 955, 1719, 2543, 2865, 7629, 8595, 12715, 22887, 38145, 114435, 485713, 1457139, 2428565, 4371417, 7285695, 21857085]

約数ペア:

[(1, 21857085), (3, 7285695), (5, 4371417), (9, 2428565), (15, 1457139), (45, 485713), (191, 114435), (573, 38145), (955, 22887), (1719, 12715), (2543, 8595), (2865, 7629)]