21816016

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12743}}^1$

素因数の和:12858

約数の個数: 20

約数和(自身を含む): 42666912

約数和(自身を除く): 20850896

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12743, 25486, 50972, 101944, 203888, 1363501, 2727002, 5454004, 10908008, 21816016]

約数ペア:

[(1, 21816016), (2, 10908008), (4, 5454004), (8, 2727002), (16, 1363501), (107, 203888), (214, 101944), (428, 50972), (856, 25486), (1712, 12743)]