20995236

素因数分解:

$2^2\times 3^2\times {\mathrm{643}}^1\times {\mathrm{907}}^1$

素因数の和:1560

約数の個数: 36

約数和(自身を含む): 53212432

約数和(自身を除く): 32217196

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 643, 907, 1286, 1814, 1929, 2572, 2721, 3628, 3858, 5442, 5787, 7716, 8163, 10884, 11574, 16326, 23148, 32652, 583201, 1166402, 1749603, 2332804, 3499206, 5248809, 6998412, 10497618, 20995236]

約数ペア:

[(1, 20995236), (2, 10497618), (3, 6998412), (4, 5248809), (6, 3499206), (9, 2332804), (12, 1749603), (18, 1166402), (36, 583201), (643, 32652), (907, 23148), (1286, 16326), (1814, 11574), (1929, 10884), (2572, 8163), (2721, 7716), (3628, 5787), (3858, 5442)]