18404860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21401}}^1$

素因数の和:21453

約数の個数: 24

約数和(自身を含む): 39550896

約数和(自身を除く): 21146036

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21401, 42802, 85604, 107005, 214010, 428020, 920243, 1840486, 3680972, 4601215, 9202430, 18404860]

約数ペア:

[(1, 18404860), (2, 9202430), (4, 4601215), (5, 3680972), (10, 1840486), (20, 920243), (43, 428020), (86, 214010), (172, 107005), (215, 85604), (430, 42802), (860, 21401)]