21387806

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{2693}}^1$

素因数の和:2744

約数の個数: 24

約数和(自身を含む): 36950904

約数和(自身を除く): 15563098

約数列:

[1, 2, 11, 19, 22, 38, 209, 361, 418, 722, 2693, 3971, 5386, 7942, 29623, 51167, 59246, 102334, 562837, 972173, 1125674, 1944346, 10693903, 21387806]

約数ペア:

[(1, 21387806), (2, 10693903), (11, 1944346), (19, 1125674), (22, 972173), (38, 562837), (209, 102334), (361, 59246), (418, 51167), (722, 29623), (2693, 7942), (3971, 5386)]