21689676

素因数分解:

$2^2\times 3^2\times {\mathrm{643}}^1\times {\mathrm{937}}^1$

素因数の和:1590

約数の個数: 36

約数和(自身を含む): 54970552

約数和(自身を除く): 33280876

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 643, 937, 1286, 1874, 1929, 2572, 2811, 3748, 3858, 5622, 5787, 7716, 8433, 11244, 11574, 16866, 23148, 33732, 602491, 1204982, 1807473, 2409964, 3614946, 5422419, 7229892, 10844838, 21689676]

約数ペア:

[(1, 21689676), (2, 10844838), (3, 7229892), (4, 5422419), (6, 3614946), (9, 2409964), (12, 1807473), (18, 1204982), (36, 602491), (643, 33732), (937, 23148), (1286, 16866), (1874, 11574), (1929, 11244), (2572, 8433), (2811, 7716), (3748, 5787), (3858, 5622)]