12988600

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{643}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 30544920

約数和(自身を除く): 17556320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 643, 808, 1010, 1286, 2020, 2525, 2572, 3215, 4040, 5050, 5144, 6430, 10100, 12860, 16075, 20200, 25720, 32150, 64300, 64943, 128600, 129886, 259772, 324715, 519544, 649430, 1298860, 1623575, 2597720, 3247150, 6494300, 12988600]

約数ペア:

[(1, 12988600), (2, 6494300), (4, 3247150), (5, 2597720), (8, 1623575), (10, 1298860), (20, 649430), (25, 519544), (40, 324715), (50, 259772), (100, 129886), (101, 128600), (200, 64943), (202, 64300), (404, 32150), (505, 25720), (643, 20200), (808, 16075), (1010, 12860), (1286, 10100), (2020, 6430), (2525, 5144), (2572, 5050), (3215, 4040)]