218291440

素因数分解:

$2^4\times 5^1\times {\mathrm{2728643}}^1$

素因数の和:2728656

約数の個数: 20

約数和(自身を含む): 507527784

約数和(自身を除く): 289236344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2728643, 5457286, 10914572, 13643215, 21829144, 27286430, 43658288, 54572860, 109145720, 218291440]

約数ペア:

[(1, 218291440), (2, 109145720), (4, 54572860), (5, 43658288), (8, 27286430), (10, 21829144), (16, 13643215), (20, 10914572), (40, 5457286), (80, 2728643)]