21390840002

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{519523}}^1$

素因数の和:519722

約数の個数: 32

約数和(自身を含む): 39051580032

約数和(自身を除く): 17660740030

約数列:

[1, 2, 7, 14, 17, 34, 119, 173, 238, 346, 1211, 2422, 2941, 5882, 20587, 41174, 519523, 1039046, 3636661, 7273322, 8831891, 17663782, 61823237, 89877479, 123646474, 179754958, 629142353, 1258284706, 1527917143, 3055834286, 10695420001, 21390840002]

約数ペア:

[(1, 21390840002), (2, 10695420001), (7, 3055834286), (14, 1527917143), (17, 1258284706), (34, 629142353), (119, 179754958), (173, 123646474), (238, 89877479), (346, 61823237), (1211, 17663782), (2422, 8831891), (2941, 7273322), (5882, 3636661), (20587, 1039046), (41174, 519523)]