28677800

素因数分解:

$2^3\times 5^2\times {\mathrm{223}}^1\times {\mathrm{643}}^1$

素因数の和:882

約数の個数: 48

約数和(自身を含む): 67079040

約数和(自身を除く): 38401240

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 223, 446, 643, 892, 1115, 1286, 1784, 2230, 2572, 3215, 4460, 5144, 5575, 6430, 8920, 11150, 12860, 16075, 22300, 25720, 32150, 44600, 64300, 128600, 143389, 286778, 573556, 716945, 1147112, 1433890, 2867780, 3584725, 5735560, 7169450, 14338900, 28677800]

約数ペア:

[(1, 28677800), (2, 14338900), (4, 7169450), (5, 5735560), (8, 3584725), (10, 2867780), (20, 1433890), (25, 1147112), (40, 716945), (50, 573556), (100, 286778), (200, 143389), (223, 128600), (446, 64300), (643, 44600), (892, 32150), (1115, 25720), (1286, 22300), (1784, 16075), (2230, 12860), (2572, 11150), (3215, 8920), (4460, 6430), (5144, 5575)]