20503460

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3989}}^1$

素因数の和:4255

約数の個数: 24

約数和(自身を含む): 43235640

約数和(自身を除く): 22732180

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3989, 5140, 7978, 15956, 19945, 39890, 79780, 1025173, 2050346, 4100692, 5125865, 10251730, 20503460]

約数ペア:

[(1, 20503460), (2, 10251730), (4, 5125865), (5, 4100692), (10, 2050346), (20, 1025173), (257, 79780), (514, 39890), (1028, 19945), (1285, 15956), (2570, 7978), (3989, 5140)]