18663440

素因数分解:

$2^4\times 5^1\times {\mathrm{233293}}^1$

素因数の和:233306

約数の個数: 20

約数和(自身を含む): 43392684

約数和(自身を除く): 24729244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233293, 466586, 933172, 1166465, 1866344, 2332930, 3732688, 4665860, 9331720, 18663440]

約数ペア:

[(1, 18663440), (2, 9331720), (4, 4665860), (5, 3732688), (8, 2332930), (10, 1866344), (16, 1166465), (20, 933172), (40, 466586), (80, 233293)]