21980626

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{4651}}^1$

素因数の和:4809

約数の個数: 16

約数和(自身を含む): 35169120

約数和(自身を除く): 13188494

約数列:

[1, 2, 17, 34, 139, 278, 2363, 4651, 4726, 9302, 79067, 158134, 646489, 1292978, 10990313, 21980626]

約数ペア:

[(1, 21980626), (2, 10990313), (17, 1292978), (34, 646489), (139, 158134), (278, 79067), (2363, 9302), (4651, 4726)]