21509288

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2017}}^1$

素因数の和:2097

約数の個数: 32

約数和(自身を含む): 42620160

約数和(自身を除く): 21110872

約数列:

[1, 2, 4, 8, 31, 43, 62, 86, 124, 172, 248, 344, 1333, 2017, 2666, 4034, 5332, 8068, 10664, 16136, 62527, 86731, 125054, 173462, 250108, 346924, 500216, 693848, 2688661, 5377322, 10754644, 21509288]

約数ペア:

[(1, 21509288), (2, 10754644), (4, 5377322), (8, 2688661), (31, 693848), (43, 500216), (62, 346924), (86, 250108), (124, 173462), (172, 125054), (248, 86731), (344, 62527), (1333, 16136), (2017, 10664), (2666, 8068), (4034, 5332)]