1640207860

素因数分解:

$2^2\times 5^1\times {\mathrm{2027}}^1\times {\mathrm{40459}}^1$

素因数の和:42495

約数の個数: 24

約数和(自身を含む): 3446220960

約数和(自身を除く): 1806013100

約数列:

[1, 2, 4, 5, 10, 20, 2027, 4054, 8108, 10135, 20270, 40459, 40540, 80918, 161836, 202295, 404590, 809180, 82010393, 164020786, 328041572, 410051965, 820103930, 1640207860]

約数ペア:

[(1, 1640207860), (2, 820103930), (4, 410051965), (5, 328041572), (10, 164020786), (20, 82010393), (2027, 809180), (4054, 404590), (8108, 202295), (10135, 161836), (20270, 80918), (40459, 40540)]