21204496

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42751}}^1$

素因数の和:42790

約数の個数: 20

約数和(自身を含む): 42409984

約数和(自身を除く): 21205488

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42751, 85502, 171004, 342008, 684016, 1325281, 2650562, 5301124, 10602248, 21204496]

約数ペア:

[(1, 21204496), (2, 10602248), (4, 5301124), (8, 2650562), (16, 1325281), (31, 684016), (62, 342008), (124, 171004), (248, 85502), (496, 42751)]