28883560

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1123}}^1$

素因数の和:1777

約数の個数: 32

約数和(自身を含む): 65147040

約数和(自身を除く): 36263480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1123, 1286, 2246, 2572, 3215, 4492, 5144, 5615, 6430, 8984, 11230, 12860, 22460, 25720, 44920, 722089, 1444178, 2888356, 3610445, 5776712, 7220890, 14441780, 28883560]

約数ペア:

[(1, 28883560), (2, 14441780), (4, 7220890), (5, 5776712), (8, 3610445), (10, 2888356), (20, 1444178), (40, 722089), (643, 44920), (1123, 25720), (1286, 22460), (2246, 12860), (2572, 11230), (3215, 8984), (4492, 6430), (5144, 5615)]