21338768

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{461}}^1$

素因数の和:743

約数の個数: 40

約数和(自身を含む): 45372096

約数和(自身を除く): 24033328

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 263, 461, 526, 922, 1052, 1844, 2104, 2893, 3688, 4208, 5071, 5786, 7376, 10142, 11572, 20284, 23144, 40568, 46288, 81136, 121243, 242486, 484972, 969944, 1333673, 1939888, 2667346, 5334692, 10669384, 21338768]

約数ペア:

[(1, 21338768), (2, 10669384), (4, 5334692), (8, 2667346), (11, 1939888), (16, 1333673), (22, 969944), (44, 484972), (88, 242486), (176, 121243), (263, 81136), (461, 46288), (526, 40568), (922, 23144), (1052, 20284), (1844, 11572), (2104, 10142), (2893, 7376), (3688, 5786), (4208, 5071)]