20969452

素因数分解:

$2^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1289}}^1$

素因数の和:1390

約数の個数: 36

約数和(自身を含む): 43235640

約数和(自身を除く): 22266188

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 166, 196, 332, 581, 1162, 1289, 2324, 2578, 4067, 5156, 8134, 9023, 16268, 18046, 36092, 63161, 106987, 126322, 213974, 252644, 427948, 748909, 1497818, 2995636, 5242363, 10484726, 20969452]

約数ペア:

[(1, 20969452), (2, 10484726), (4, 5242363), (7, 2995636), (14, 1497818), (28, 748909), (49, 427948), (83, 252644), (98, 213974), (166, 126322), (196, 106987), (332, 63161), (581, 36092), (1162, 18046), (1289, 16268), (2324, 9023), (2578, 8134), (4067, 5156)]