21628480

素因数分解:

$2^6\times 5^1\times {\mathrm{67589}}^1$

素因数の和:67606

約数の個数: 28

約数和(自身を含む): 51503580

約数和(自身を除く): 29875100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67589, 135178, 270356, 337945, 540712, 675890, 1081424, 1351780, 2162848, 2703560, 4325696, 5407120, 10814240, 21628480]

約数ペア:

[(1, 21628480), (2, 10814240), (4, 5407120), (5, 4325696), (8, 2703560), (10, 2162848), (16, 1351780), (20, 1081424), (32, 675890), (40, 540712), (64, 337945), (80, 270356), (160, 135178), (320, 67589)]